In the manga, Renton is untalented in lifting, even after joining the Gekkostate; in the anime, his ability to lift improves after joining the Gekkostate.
In the manga, Renton's skills in mechanical engineering almost surpass his grandfather's; in the anime, while he is a gifted mechanic, he is not close to the same level as Axel.
In the manga, Renton is invited to join the Gekkostate to do maintenance on the Nirvash and he was a bit reluctant about it; in the anime, he was invited because he helped Nirvash activate the Seven Swell and he immediately agreed to join the crew.
In the manga, Eureka doesn't feel jealous of Renton's ability to pilot the Nirvash, while she did for a while in the anime.
In both versions, Renton said he could never kill another person. In the anime, he felt tremendous guilt when he realized he had killed many people every time he destroyed a KLF. However, in the manga, he felt no guilt because he was defending Eureka from some SOF soldiers as they tried to kill her.
In the manga, Renton was reluctant to join the Gekkostate because he didn't want to get involved in the military; in the anime, he didn't learn that the crew was in midst of a war with the military until after he agreed and felt uncomfortable about it afterwards.
In the manga, Renton is overcome with fear and disbelief upon learning that Eureka is a Coralian; in the anime, he didn't care about that and assured her that he still loved her.
In the manga, Holland shows no animosity towards Renton because he believes Renton is the true heir to Adroc's legacy; in the anime, Holland grows jealous of Renton's relationship with Eureka, to the point of physical and emotional violence.
In the manga, Eureka did not smile for the first time until she revealed to Renton about her role in the Ciudades del Cielo massacre and he comforts her; in the anime, she smiled for the first time after burning the remains of his room and seeing him trying to put out the flames.
In regards to the cause of Eureka's first smile, in the manga, it was out of affection towards Renton; in the anime, it was out of amusement.
In the manga, Eureka did not want Renton to join the Gekkostate as badly as her anime counterpart.
In the manga, Eureka did not lose most of her hair when she came into contact with the Coralian Zone; in the anime, she did lose most of her hair. In both versions, she received scars from the encounter, thought.
In the manga, Eureka realized her feelings for Renton during her time in the Coralian Zone; in the anime, it was after she found out he had quit the Gekkostate.
In the manga, Eureka states that she fell in love with Renton because he always saved her; in the anime, it was due to him accepting everything about her.
In the manga, Eureka never gets angry at Renton; in the anime, she has on a few occasions been angry, and even jealous, at him, even though she later feels bad about it.
In the manga, Eureka shows no loyalty towards Holland; in the anime, she states that she trusted Holland more than anyone before she met Renton.
In the manga, Eureka doesn't think positively about the world, is anti-social, and distrusts people; in the anime, she is the complete opposite, even though she did have trouble bonding with people and adapting to the change in her.
In the manga, Eureka is not bothered by the fact she is a Coralian; in the anime, she was ashamed of it because she was afraid that Renton would leave her.
In both versions, Eureka shows deep concern towards Renton's well-being. In the manga, she is afraid of him being killed by the Coralians due to him being the "chosen one"; in the anime, she is more afraid if she and Renton can remain together as a couple.
In the manga, Renton and Eureka did not promise each other to be together forever; in the anime, they made a vow to be together forever and that vow is what keeps them going.
In the manga, Eureka didn't show a lot of enthusiasm in wanting to be together with Renton; in the anime, she states that she wants nothing more than to be with him forever and is constantly saddened by the possibility that that won't happen.
In the manga, Eureka is not bothered by the scars on her body; in the anime, she grows ashamed of them, and this causes her to try to look prettier for Renton.
In the manga, Eureka did not grow wings and parts of her skin did not turn green; in the anime, this does happen when she is in close proximity of the Scub Command Center.
In the manga, Eureka is remotely controlled by the Scub Coral, and can sense it call out to her; this is not the case in the anime.
In the manga, every member of the Gekkostate (minus Mischa, Ken-Goh, and Gonzy) lifts; in the anime, only Renton, Eureka, Holland, Mathieu, and Hilda are seen lifting, while Talho and Gidget are known to lift.
In the manga, Holland has a love for coffee and smoking, unlike his anime counterpart.
In the manga, Anemone has an obsession for things that look "tasty", such as cakes and even people she thinks look delicious and wants to eat; this is not the case with her anime counterpart.
In the manga, Adroc Thurston did not die in the First Summer of Love, but was murdered by Dewey Novak; in the anime, he died putting an end to the incident, but it was later revealed that he actually merged with the Scub Coral.
The children's characters are portrayed differently. In the manga, Maeter acts like the leader of the three kids and has a tendency to physically bash Renton in front of Eureka; while in the anime, she has a tendency to throw tantrums and seems to be the first kid to accept Renton. In the manga, Maurice is introverted, does not remember Eureka killing his parents, and avoids Renton; in the anime, he acts as the leader of the three, remembers his parents' deaths, and is vocal about his dislike towards Renton.
The three kids are protective of Eureka and were against her relationship with Renton in both versions. In the manga, their opposition lasts until the end of the manga, when they end up living with Renton and Axel; in the anime, they gradually come to accept and love him as a father-figure, and they are later adopted by him.
In the manga, Gonzy talks more and his eyes are opened a few times; in the anime, he rarely speaks and his eyes only open once, which reveal he has purple eyes and is a Coralian.
In the manga, the KLFs and LFOs have no vehicle mode, unlike in the anime.
In the manga, Nirvash has no fond memories of Renton and is often mute; in the anime, it refused to fly unless he piloted it with Eureka and it responded frequently on how it felt.
In the manga, Eureka did not crash land on Renton's house and she didn't use a flamethrower on the remains of his room, unlike the anime.
In the manga, the word "EUREKA" does not appear in Renton's Compac Drive but on Nirvash's computer screen when the Seven Swell is about to occur, unlike the anime.
In the manga, when Axel gives Renton the Amita Drive, Renton is never told its' name other than it's an upgrade for the Nirvash, unlike the anime.
In the manga, Dominic didn't join in the pursuit of Gekkostate to Bellforest at the beginning of the series.
In the manga, Dominic was adopted by Dewey in a war-torn area, unlike in the anime.
In the manga, Renton doesn't get knocked out after releasing the Seven Swell for the first time and tried to deny his confession to Eureka immediately after telling her that he had fallen in love with her because he was embarrassed; in the anime, he did pass out and became very open about his love for her after confessing because he hoped she would return his feelings.
In the manga, Adroc was Holland's mentor and Eureka did not think of him as a father figure; in the anime, Holland has mixed feelings of Adroc and Eureka looked up to Adroc as a father figure.
In the manga, Holland never met Diane or fell in love with her; in the anime, Holland became obsessed with her after their breakup, and as a result, Talho was jealous of her.
In the manga, Talho exhibits no jealousy towards Eureka over the attention shows her; in the anime, her jealousy towards Eureka stops by the start of the third season, once Eureka reciprocates Renton's feelings and Holland entrusts her in his care.
In the manga, Holland participated in the massacre at Ciudades del Cielo in order to kill the Vodarac people to avenge Adroc's death, but it turned out that it was Dewey who murdered Adroc and sent Holland on the mission for his own satisfaction; in the anime, the massacre was the result of the military's belief that the Vodarac people were a group of terrorists.
In the manga, the Gekkostate's mission is to stop the Ageha Project; in the anime, it is to protect Eureka and establish contact with the Scub Coral.
In the manga, Holland's Terminus TypeB303 "Devilfish" doesn't exist.
In the manga, Eureka is not seen lifting, even though she carries a ref board with her; in the anime, she is seen lifting as she goes looking for Renton after he quit the Gekkostate.
In the manga, Eureka and Talho went to retrieve the Pancha Fruit; in the anime, Eureka went with Renton and Matthieu.
In the manga, Eureka fought Anemone on her own and lost, almost killing her; in the anime, Eureka and Renton fought Anemone together in three fights and never lost.
In the manga, Eureka was born from a large egg created by the Scub Coral and Adroc, who discovered her, thought she was a gift from God; in the anime, not much is revealed about how she was found, other than from within the Scub Coral and Adroc was the one who taught her how to walk, talk, and interact with others.
In the manga, Holland states that Renton was chosen by the "world" (Scub Coral); in the anime, it was Eureka who would get to chose her partner. Renton was not chosen for the purpose of being Eureka's partner but to save the world in the manga.
In the manga, Axel boards the Gekkostate to help repair the Nirvash; in the anime, he never boards the ship but helps reconstruct a new ref board for Nirvash.
In the manga, the Amita Drive was stolen by Dewey's crew, unlike in the anime.
In both versions, Dewey's goal is to destroy the Scub Coral and Coralians but his reasons vary. In the manga, it is due to his belief that the Coralians will kill all of humanity; in the anime, he wants the humans to take back the planet after the Scub Coral merged with it.
In the manga, Dewey is killed by Holland during a gun battle; in the anime, Dewey killed himself after revealing that he inserted a Compac Drive in his stomach and became one with the planet.
In the manga, the Nirvash Spec2 is designed by Renton; in the anime, it was designed by the Tresor scientists.
In the manga, Renton discovers that Eureka is a Coralian from Mischa; in the anime, he was told this by Talho.
In the manga, Renton attempts to leave the Gekkostate because he was unable to deal with Eureka being a Coralian and they are fighting against the military, but he changes his mind after the military tries to kill Eureka; in the anime, he did leave the ship due to the mistreatment from the crew and thinking Eureka hates him, but he later returns to save Eureka from Charles and Ray.
In the manga, the Great Wall doesn't exist, while is plays a major role in the fourth season of the anime.
In the manga, Renton and Eureka never traveled to Earth; in the anime, they did so with the kids.
In the manga, Eureka is the only Humanoid Coralian; in the anime, she, Sakuya, and Gonzy are Humanoid Coralians. Gonzy is revealed to have been one of the three Sages in the manga.
In the manga, the Izumo crew, Greg Bear, Miss Tiptory, Norb, Sakuya, Charles and Ray Beams do not exist; while in the anime, they play important roles.
Four exclusive characters exist in the manga. Kes, a little girl who her parents were killed by Eureka. Despite this, she decided to help both Renton and Eureka by telling Matthiew and Hilda that they were captured by the military. Logica, a solider who use to respect Holland, until Holland betray the military and he wants revenge on him, however he gets kill by TheEnd. Yauchi, a solider priest who believes Dewey is the chosen one that will bring peace to the world only to learn he was wrong and switch sides to the Gekkostate. Dr. Diamond, a scientist who studies on the Coralians, his fate is unknown.
The relationship between Renton and Eureka is a key plot in both versions but it varies. In the manga, there is less development due to the little amount of time they got together, although it was enough for them to confess their love to each other and share their first kiss before Eureka disappears with the Scub Coral and Renton refuses to mourn her death because he truly believes she will return to him. In the anime, they go through several trials and hardships in their relationship, and when Eureka was about to become the next Scub Command Cluster, Renton saved her and they were able to live together on Earth, where they later marry and have a daughter and son together.
In the manga, Renton never reunites with his sister, Diane, and the reason for her disappearance is never explained; in the anime, he discovers that she had somehow merged with the Scub Coral. He also reunited with his father, Adroc, in the anime.
In the manga, the Gekkostate's magazine ray=out plays a minor role in the series, while it plays a larger role in the anime.
In the manga, the Compac Drive plays a minor role in the series, and the Despair Sickness doesn't exist; in the anime, the Despair Sickness is linked to the Compac Drive, which displays various colors and messages.
In the manga, the Gekkostate doesn't fly into space, while it does several times in the anime.
In both versions, Dewey and Anemone are the two leading antagonists, and the Coralians also play a role but the reasons vary. In the manga, the Coralians wanted to destroy humanity in order to survive against those they felt threatened by; in the anime, the Coralians unintentionally killed people after being attacked by the military.
In the manga, Dewey kills all three of the sages to gain all power of the military; in the anime, he kills only two of the sages while the third sage, Coda lives as she gives Dewey the right to lead the military.
In the manga, Holland loses an arm in the final standoff with Dewey; this never happens in the anime.
In the manga, the Coralians' intention was to introduce Renton's DNA code into themselves to further their evolution and depart for another planet, abandoning Earth to its' doomed fate; in the anime, the Coralians' intention was to create co-existence with the humans and continue living on Earth. Thus making Eureka's purpose of her existence different between the manga and anime (to find the "chosen one" (Renton) and give him to the Coralians to "eat" in the manga; to understand the humans' way of living and emotions in order to communicate with them in the anime).
In the manga, the Coralians' origin as an ordinary coral evolved due to a harsh ocean environment; in the anime, the Scub Coral crashed into the ocean after colliding with a satellite, and merged with the corals and sea creatures.
In the manga, the Scub Coral and every Coralian, including Eureka, disappears and the Earth reverts back to its' original form before the Scub Coral took over the planet, with no trapar waves at the end; in the anime, after Renton saves Eureka from becoming the next Scub Command Center, half of the Scub Coral traveled to a different world with the Nirvash, who told them the departing Scub Coral will eventually return.
In the manga, Talho does not become pregnant with Holland's child until two years after the Coralians disappeared; in the anime, she becomes pregnant much earlier in the series.
In the manga, everyone seems aware that they are living on Earth; in the anime, everyone believes they are living on a different planet that resembles Earth until Dewey tells them the truth in the final episodes.
In the manga, Moondoggie and Gidget are more open about their relationship; in the anime, Gidget clearly shows that she is in love with him, but he never states the length of his feelings for her.
In the manga, Dominic realizes his feelings for Anemone early in the series; in the anime, he doesn't realize them until the third season of the series. In both versions, she rejects him until the end, when she finally realizes she reciprocates his feelings.
In the manga, Dominic dies as he is defending Renton from the Coralians; in the anime, he lives, saves Anemone from getting herself killed during her mission to destroy the Scub Command Cluster and enters in a relationship with her.
In the manga, it is never stated that the Amita drive needs Renton and Eureka to pilot the Nirvash, and the Nirvash is able to fly with just Eureka, while it rejected her when Renton wasn't in the cockpit in the anime.
In the manga, Renton and Eureka kiss only once; while in the final anime episode, they kiss twice and even get married.
In the manga, Ao is introduced as he jumps off a cliff to swim in the ocean water; in the anime, he first seen flying his FP.
In the manga, Eureka never dyes her turquoise hair brown; in the anime, she does so in order to not rouse suspicion from the villagers after she arrived in Ao's world (although she is seen in one flashback without dyed hair when Ao was a toddler).
In the manga, Ao immediately realizes that his brown hair had turned turquoise when he activated the Nirvash Mark I; in the anime, he didn't realize that his hair had changed colors until he overheard someone mention him and called him "the kid with blue hair".
In the manga, Ao and Naru appear to be in love with each other; in the anime, while their relationship is hinted to be romantic, they hastily maintain they are just friends.
In the manga, Ao never sees the hazy form of the damaged Nirvash Neo before his final battle against the Secrets; in the anime, he sees it once as he returns his mother to her world for the first time.
In the manga, Christophe never sacrifices himself to save Ao and Fleur from Truth, unlike the anime.
In the manga, Elena shows no hatred towards Eureka; in the anime, she shows resentment towards her because Eureka brought her to the year 2020 and mistakenly thought she was from Eureka's world, although this turns out to be false and that Eureka saved her from a Scub Burst in 1981.
In the manga, Fleur's feelings towards Ao are not apparent, although hinted to be romantic; in the anime, it is strongly implied that Fleur has feelings for Ao due to her always blushing around him and worrying about him, especially at the possibility that he will one day disappear.
In both versions, Renton and Eureka wear identical bracelets, and Eureka's bracelet is used to awaken the Nirvash Mark I, which Ao obtains. In the manga, Renton gives his bracelet to Ao as a parting gift; in the anime, Renton gives Ao his old ref board instead.
In both versions, Ao has several fond memories of his mother. In the manga, Ao remembers when Eureka told him about love, while this flashback is never seen in the anime.
In the manga, Ao's surprised reaction when Renton introduces himself implies that Eureka told Ao about his father; in the anime, Ao didn't seem to know his father's name until the past Eureka told him who her husband is Renton, although it is possible she did tell him about Renton when he was younger but he forgot as he got older.
In the manga, Eureka never mentions about high levels of trapar affecting her unborn daughter during her first trip into the past; in the anime, she does bring this up and this causes her to worry about giving birth to a child that come to will resent her.
In the manga, Renton never boards the Trinton ship to see Eureka in holographic form and explain the cause of her current situation when he first arrived in Ao's world, while he does so in the anime.
In the manga, Naru never kisses Ao; in the anime, she does so, although it was later revealed to have been a dream.
In the manga, Naru witnesses Ao leaving their world to travel 10 years in the past to save his parents and orders him to come back soon; in the anime, she was hospitalized when he traveled to the past and never learns about his departure.
In the manga, Ao willfully uses the Quartz Gun on Truth to destroy him and decided to use it only to erase anything evil despite knowing it can alternate time; in the anime, Truth uses the quartz Gun on himself and Ao is so scared at changing the timeline that he refuses to use the gun again.
In the manga, after destroying the Secrets, Ao is told by Truth that no one will likely remember him due to using the Quartz Gun to change history three times and encounters his mother in holographic form one last time before she disappears; in the anime, he doesn't see his mother in holographic form again after his final battle against the Secrets and is told of his existence being erased in his world two years later.
In the manga, Ao is able to convince Naru that Truth is tricking her and she reconciles with him, and he expresses at rage towards Truth for what he did to her; in the anime, he is never able to get her to change her opinion about Truth and Ao unintentionally almost kills her during a quarrel, but he saves her.
In the manga, Naru, Fleur, and Elena meet at a hill and see Ao returning to the island after traveling through different times for two years, and their reactions strongly imply that they remember him, while this never happens in the anime.
In the manga, Eureka's bracelet wounds up in Naru's care by Fleur, who knew Ao always wanted to give it to Naru as a gift, and she is seen wearing it in the final scene; in the anime, Ao did want to give it to Naru when he first received it but wears it throughout the series himself.
In the manga, Eureka appears in holographic form three times; in the anime, it was five times.
In the manga, Truth's physical body is destroyed by Eureka (in holographic form) as she vowed to protect her son from him; in the anime, he shot himself with the Quartz Gun and seemingly died. In both versions, after his "death", he becomes the archetype of the Nirvash Mark I and becomes the Nirvash Neo.
In the manga, Renton, Eureka, and Ao share a joyous family embrace during the final battle against the Secrets, while this never happens in the anime.
In the manga, Renton arrives in Ao's world from a single pillar of the Seven Swell; in the anime, it was seven pillars of the Seven Swells.
In the manga, when they first meet, Renton introduces himself by telling Ao he is Ao's father; in the anime, he introduced himself by telling Ao and the Team Pied Piper crew he is Eureka's husband.
In the manga, Eureka strongly refused to part ways with Ao and let him risk his own life to fight the Secrets on his own, but Renton supported his decision and told their son how their sacrifices to protect Ao were worth it; in the anime, although saddened to be separated from their son, Renton and Eureka supported Ao's decision to fight the Secrets on his own and Renton calls Ao "son" for the first time.
In the manga, it is never revealed what happened to the Nirvash Neo and Truth during the two years when Ao was traveling through times; in the anime, Truth decided to continue time-traveling with the Nirvash Neo and parted ways with Ao when they arrived in the year 2027.
Inconsistencies between Eureka Seven and Eureka Seven: AOEdit
In E7, the whole purpose of the conflicts in the series was to reunite the humans and Scub Coral as one and create a permanent co-existence between the two; in AO, this is completely ignored as the issues with the Secrets causes the Scubs and humans to destroy each other.
In E7, the Scub Coral meant no harm towards the humans and simply wanted to communicate with them; in AO, the Scub Coral infects dozens of people who live in close proximity of it, resulting in death and long-term deformities (though, this could be unintentional).
The fact that people who live in close proximity of Scub Corals are infected causes a big plot hole in AO, due to the fact that people literally live on the Scub Coral and have even walked inside of them without being infected in E7.
Renton and Eureka's world in the future of AO is completely different than in E7 (such as there being light poles and destruction of lands and cities long before the Secrets found their way into the E7 world).
In E7, Renton and Eureka were told by the Nirvash TypeZERO that half of the Scub Coral would be departing to a different world in order to prevent the Limit of Questions from happening again; in AO, this is completely ignored as it was revealed they were conducting experiments to learn why the Scubs were disappearing.
In E7, the Nirvash TypeZERO became the new Scub Command Cluster in the final episode and departed with half of the Scub Coral to Ao's world; in AO, the Nirvash, in its' spec2 form, is used by Eureka in E7's world and the reason for its' reappearance is unexplained.
In E7, only Renton and Eureka were able to pilot the Nirvash TypeZERO, and it even rejected Eureka if Renton was not in the cockpit; in AO, the Nirvash for some reason accepts Naru as its' pilot, despite her opposition against Ao, who is Renton and Eureka's son.
In E7, the Nirvash TypeZERO told Renton and Eureka to bring forth a new evolution (have a Human-Coralian child) in order to bring the humans and Scub Coral together as one and the departing Scubs will return when that happens; in AO, an environment with high levels of trapar from the Scub Coral makes it inhabitable for a Human-Coralian hybrid to live in, therefore, the Scubs indirectly caused the death of Renton and Eureka's daughter.
In E7, trapar levels are habitable by humans, Scub Corals, and Coralians with no ill effects, so to why it is inhabitable for human-Coralian hybrids is never explained, especially in Anemone's case due to that she has both human and Coralian biology.
In E7, Renton decided to help the humans and Scub Coral reach a reconciliation by making it known the Scubs want communication and mean no harm; in AO, he goes at great lengths to destroy the Scub Coral because he blames the Scubs for his daughter's death and knows they pose a threat to his son's life.
In E7, dozens of people (such as Norb, Sakuya, and Renton's father, Adroc, and sister, Diane) merged with the Scub Corals that arrived in the AO world, so ironically, Renton is killing those dear to him when he destroys a Scub Coral in Ao's world while knowing this in AO.
In E7, the Nirvash TheEND is destroyed in episode 48 when Dewey destroyed the Scub Command Cluster; in AO, it mysteriously reappears along with a KLF, which remains unexplained.
In E7, Renton and Eureka officially adopt the three children in the final episode; in AO, there is no mention of them and they are never seen in flashbacks with the couple. The other E7 characters are never seen and mentioned in AO.
In E7, the Gekkostate was disbanded but what happened to the Gekko afterwards was unexplained (it is assumed it was preserved as a reminder of their adventures); in AO, in a ruined state, Renton and Eureka used it as part of an experiment to solve the Scub Coral disappearances, and it was later destroyed in Ao's world.
In E7, the Nirvash TypeZERO was last seen in its' spec3 form; in AO, it is seen in its' spec-2 and spec-V3 forms, despite it becoming the Scub Command Cluster and leaving with half of the Scubs.
In E7, the Seven Swell is a single pillar of light with intense power and seven rings around it; in AO, it seen as seven pillars of light.
In E7, there is no mention of the Seven Swell capable of taking anyone to a different world or time; in AO, Renton enters a Seven Swell to arrive in his son's world.
In E7, the Scub Coral's most unique abilities were bending the laws of physics and teleporting to different universes; in AO, it can also bring the dead back to life, which had been said it was unable to do in E7.
In E7, Eureka has some sort of psychic connection to the Scub Coral due to her being born from it, but this is completely ignored in AO and the Scub Corals instead connect to Naru, who developed psychic abilities after the Okinawa Scub Burst.