Aoi Todo/Synopsis

History
When Aoi was in grade school, Aoi had met a sorcerer who asked what his type of women was after he has just defeated a high school student. Aoi felt that this event would cure his boredom.

Yuki would introduce Aoi to the Jujutsu and train him in using curse techniques. At some point of time during the Goodwill event held at Kyoto Jujutsu High Aoi participated and was defeated in a match with his fellow students by the Tokyo Jujutsu High by Yuta Okkotsu and the third years causing Aoi to respect Okkotsu's playing. Aoi would have a determination to defeat Okkotsu in a rematch held in the winning school next year and defeat him in the match(this would be his last appearance in a Goodwill event as he was going to become a third years, fourth years cannot take part in the event).

When Geto launched an attack at Shinjuku and Kyoto, Aoi had taken out 6 cursed spirits, 5 first-grade cursed spirits without using his cursed technique, and 1 special grade cursed spirit with his technique, all by himself.

Fearsome Womb Arc
Aoi and Mai came to Tokyo with principal Yoshinobu, in order to size up the competition for the Kyoto Goodwill Event. Aoi and Mai meets up with Megumi Fushiguro and Nobara Kugisaki and wonders whether they would surpass Okkotsu. He then confronts Megumi and asked him what type of girl he likes. As Megumi wondered why he should answer him, Aoi fully introduced himself and explained why he asked that question. When Megumi gave Aoi an answer that he didn't have a type of woman, Aoi called him boring and attacked him. When Megumi brought up not using his cursed technique against spirits at one point, Aoi corrected Megumi on what really happened which caused Megumi to think that Aoi is a monster.

As Megumi prepared to fight Aoi at long range, Aoi easily closed the distance and slammed Megumi to the ground. When Megumi tried to get away, Aoi easily grabbed hold of Megumi and slammed him through some structures. Aoi was suddenly restrained by Megumi's shikigami, but said he didn't feel any power from Megumi's technique and tore of the shikigami's tongues. When both of them were about to get serious, Toge and Panda arrive and stop Aoi. Aoi and Panda start to talk, and Aoi decides to stop fighting, before going he tells them to send Yuta Okkotsu his message that he has come to have a rematch with him and leaves. Aoi then met up with Mai and said that they are leaving much to Mai's protest. Aoi left with Mai to go attend a celebrity meetup. Later Aoi attended the celebrity meetup and got to shake hands with Nobuko Takada his idol.

Kyoto Goodwill Event Arc
A month later, Aoi arrived in Tokyo along with the other Kyoto students and staff. Aoi is there when Gojo revealed that Yuji is alive to everyone, and was given a souvenir from Gojo's trip. Aoi then attended the pre-event meeting along with the other Kyoto students, and got annoyed when Yoshinobu instructed them to kill Yuji especially he wants to go and meet Takakda. When Aoi is stopped by Noritoshi, Aoi threatened them all before leaving.

When the event begins, Aoi encountered the Tokyo group and split them apart. Aoi then starts to fight Yuji and manages to pound him into the ground. Aoi thought he won and started to walk away, but was stopped when Yuji got back up. Aoi got excited by this and asked what Yuji's name is along with what is Yuji's type of woman. Yuji introduced himself and gave an answer that Aoi agreed with, Aoi visualized a memory about a school life that they didn't have and called Yuji his best friend. When Yuji is surrounded by the Kyoto students, Aoi saves him and forces the students to leave.

Aoi and Yuji then continue their fight, during which Aoi figures out how Yuji is able to adapt to his surroundings. Aoi also figured out that Yuji's cursed energy has a habit of lagging and says that is wrong. Aoi told Yuji that if he wants to get stronger then he will have to stop having his cursed energy lag, which Yuji agreed with. As both of them continued to fight, Aoi noticed that Yuji is still growing as the fight continues. Aoi then explained how cursed energy flows in the body, which Yuji managed to understand. Both of them continue to fight, and Aoi decides to help Yuji grow stronger.

When intruders arrived at the site of the event and seal it off, Aoi and Yuji saved Megumi and Maki from Hanami. After Aoi handed Maki and Megumi over to Panda to get them to a safe location, Aoi watched Yuji fight Hanami until he could use Black Flash. Aoi noticed that Yuji is too angered to fight properly, so Aoi slapped Yuji and told him that he needed to calm down. After Yuji managed to use Black Flash on Hanami, Aoi explained to Yuji that he now knows what his cursed energy is capable of. Aoi then joined Yuji to face off against Hanami. As Aoi and Yuji fight Hanami, they learn that Hanami's cursed technique is capable of manifesting plants. Aoi and Yuji continuously dodge Hanami's attacks, when Aoi decided it's time to use his technique.

Aoi thought about everything that Hanami has done and prepares to charge but is grabbed by Hanami's power. As Hanami prepares to kill Aoi while facing off against Yuji, Aoi used Boogie Woogie to switch places with Hanami, who ends up being pierced instead. When Hanami figured out what Aoi's technique is capable of, Aoi explained what his technique was. As Aoi and Yuji charge towards Hanami, Aoi explained how he activated his technique. Aoi then used his technique to have Yuji continuously attack Hanami with Black Flash. When Hanami figured out their strategy, Aoi tricked Hanami so that Yuji could land the same attack again. Aoi and Yuji continue to fight Hanami, after they figure that the continuous use of Black Flash wears Hanami down.

When Hanami launched a technique at the two, Aoi used his technique to switch Yuji and Hanami. Aoi went to defend himself with cursed energy, but figured that that will work against him and released his cursed energy's flow. As Aoi came out unharmed, Aoi and Yuji continue to fight Hanami. Once they reach a certain spot, Aoi used his technique to switch Yuji out with the special grade cursed tool: Playful Cloud. Aoi then used the cursed tool to harm Hanami. As Hanami countered, Aoi managed to dodge it. When Yuji returned to the fight, Aoi told Yuji to stay away as Hanami is preparing to use a technique.

Once Gojo arrived at the battle site and Hanami decided to retreat, Aoi stopped Yuji from going after Hanami as Gojo launched Hollow Technique: Purple at the cursed spirit. After Gojo's technique landed, Aoi explained how the technique is so destructive that even they don't know if the cursed spirit is exorcised. After the day's event was cancelled, Aoi suddenly appeared in the healing ward where Yuji and Nobara were checking up on Megumi. Upon having Aoi appear, Yuji ran away from him who continued to chase after Yuji calling him his brother and wanting to hug him.

On the second day of the Kyoto Goodwill Event, Aoi convinced everyone that they should continue the event. Aoi then played a game of baseball along with the other students. When it's Aoi up to bat, he was intentionally hit by the ball with everyone complimenting Maki for the pitch.. Aoi later watched as Yuji hit a homerun with a smile. After the event is over, Aoi headed back to Kyoto along with the other students and staff.

Death Painting Arc
Days later, Aoi and Mei Mei met with principal Yoshinobu, and nominated Megumi, Nobara, and Yuji to be promoted to grade 1 sorcerers. Afterwards, as Aoi played a game of tabletop tennis with Mei Mei, he voiced how he would be accompanying Yuji on more missions for his promotion. Mei Mei told him that the one that nominated the person is not able to accompany the nominee, much to Aoi's disappointment.

Shibuya Incident Arc
Just as Mahito was about to execute a distressed Yuji Itadori, Aoi appeared just in time to save him, using Boogie Woogie to swap positions with Mahito. After a short clash between Aoi and Mahito, Yuji tells Aoi about the events of Shibuya, including Sukuna's rampage, Kento Nanami's death, and Nobara's injuries from Mahito, overwhelmed with despair due to his inability to stop these events.

Aoi rebuffs Yuji's speech, telling him to accept that the path of jujutsu sorcerers cannot be stopped by feelings of guilt or sadness and to keep moving forward to honor the memories of those passed. Continuing to spar with Mahito, Aoi uses Boogie Woogie to evade Mahito's attempts to use Idle Transfiguration, as well as avoiding Mahito's transfigured humans. As Mahito goes in for another attack, Todo uses Boogie Woogie to swap himself and Yuji, allowing Yuji to strike Mahito with a Black Flash. With Yuji now ready to fight once more, Aoi welcomes him back into the battle and promptly rips his shirt off. The two continue to trade blows with Mahito as Aoi switches places and manages to land a Black Flash on Mahito. When Mahito uses Soul Multiplicity: Body Repel, Aoi and Yuji are forced outside to continue fighting. Mahito tells Yuji to kick it up a notch when Aoi asks Mahito if he's forgotten about him before slamming him into the ground. Mahito uses Soul Multiplicity: Polymorphic Soul Isomer and leaves the transfigured human for Aoi to fight against, Aoi assumes that the transfigured human is around a grade 2 or 3 but is surprised by it's strength when he's sent flying into a building. Todo is able to get back up and manages to easily finish it off with a single blow. He notices that there are two more transfigured humans and asks for them to forgive him.

Aoi is able to defeat the other transfigured humans and regroups with Yuji as he comments on how Mahito didn't want him to be in the fun. Aoi realizes that Mahito has activated his Domain Expansion for a total of 0.2 seconds and activates his own domain expansion to counter: Simple Domain. However, Aoi's left hand starts to transform and he cuts it off just as Mahito closes the distance between them and lands a Black Flash. Aoi is able to minimize the damage from his Black Flash attack. Mahito tries to end Aoi with Idle Transfiguration but Todo is able to activate Boogie Woogie by slapping his remaining hand on Mahito's free hand and is able to allow Yuji to land an attack on Mahito. Aoi is lying on the ground and thinks to himself about how it's a miracle that he just got away with just a few injuries on his hand.

While Yuji and Mahito are battling each other, Aoi suddenly appears and asks Mahito if he knew that an arm is just a decoration. He claps his hand together which leaves Mahito under the impression that he's going to activate Boogie Woogie. However, it was merely a distraction as Yuji manages to land a Black Flash attack on the distracted Mahito. Todo then apologizes and says that his technique is already dead. He later returns back to the Kyoto Jujutsu High with Arata Nitta.