Aoi Todo/Synopsis

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

When Geto launches 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 while taking a walk at night.

Cursed Training Arc
Aoi and Mai came to Tokyo with principal Yoshinobu, in order to size up the competition for the Kyoto Goodwill Event. Aoi confronts Megumi and asks what type of girl he likes. As Megumi wonders why he should answer him, Aoi fully introduces himself and explains why he asks that question. When Megumi gives Aoi an answer, Aoi calls him boring and attacks him. When Megumi brings up about not using his cursed technique against spirits at one points, Aoi corrects Megumi on what really happened which causes Megumi to think that Aoi is a monster.

As Megumi prepares to fight Aoi at long range, Aoi easily closes the distance and slams Megumi to the ground. When Megumi tries to get away, Aoi easily grabs a hold of Megumi and slams him through some structures. Aoi is suddenly restrained by Megumi's shikigami, but says he doesn't feel any power from Megumi's technique. When both of them are about to get serious, Toge and Panda arrive and stop Aoi. Aoi and Panda start to talk, and Aoi decides to stop fighting and leave. Aoi then meets up with Mai and says that they are leaving much to Mai's protest. Aoi leaves with Mai to go attend a celebrity meet. Later Aoi attends the celebrity meet and get to shake hands with the celebrity he wanted to meet.

Kyoto Goodwill Event Arc
A month later, Aoi arrives in Tokyo along with the other Kyoto students and staff. Aoi is there when Gojo reveals that Yuji is alive to everyone, and is given a souvenir from Gojo's trip. Aoi then attends the pre-event meeting along with the other Kyoto students, and gets annoyed when Yoshinobu instruct them to kill Yuji. When Aoi is stopped from leaving by Noritoshi, Aoi threatens them all before leaving.

When the event begins, Aoi encounters the Tokyo group and splits them apart. Aoi then starts to fight Yuji and manages to pound him into the ground. Aoi thinks he has won and starts to walk away, but is stop when Yuji get back up. Aoi gets excited by this and asks what Yuji name is along with what is Yuji's type of woman. Yuji introduces himself and gives an answer that Aoi agrees with, Aoi visualizes a memory about a school life that they didn't have and calls 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 fighting, which Aoi figures out how Yuji is able to adapt to his surrounds. Aoi also figures out that Yuji's cursed energy has a habit of lagging and says that is wrong. Aoi tells Yuji that if he wants to get stronger then he will have to stop having his cursed energy lag, which Yuji agrees with. As both of the two continue to fight, Aoi notices that Yuji is still growing as the fight continues. Aoi then explains how cursed energy flows in the body, which Yuji manages to understand. Both of then continue to fight, where Aoi decides to help Yuji grow stronger.

When intruders arrive at the site of the event and seal it off, Aoi and Yuji save Megumi and Maki from Hanami. After Aoi hands Maki and Megumi over to Panda to get them to a save location, Aoi watches Yuji fight Hanami until he can use Black Flash. Aoi notices that Yuji is to angered to fight properly, so Aoi slaps Yuji and tells him that he need to calm down. After Yuji manages to use Black Flash on Hanami, Aoi explains to Yuji that he now know what his cursed energy is capable of. Aoi then joins Yuji to face off against Hanami. As Aoi and Yuji face Hanami, they learn that Hanami's cursed technique is capable of manifesting plants. Aoi and Yuji continuously dodge Hanami's attacks, which Aoi decides it's to use his technique.

Aoi then thinks about everything that Hanami has done and prepares to charge but Aoi is grabs by Hanami's power. As Hanami prepares to kill Aoi while facing off against Yuji, Aoi uses Boogie Woogie to switch place with Hanami who ends up being pierced instead. When Hanami figures out what Aoi's technique is capable of, Aoi explains what his technique is capable of. As Aoi and Yuji charge towards Hanami, Aoi explains how he activates his technique. Aoi then uses his technique to have Yuji continuously attack Hanami with Black Flash. When Hanami figures out their strategy, Aoi tricks Hanami so that Yuji can 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 launches an technique at the two, Aoi uses his technique to switch Yuji and Hanami. As Aoi goes to defend himself with cursed energy, but figures that that will work against him and releases his cursed energy's flow. As Aoi comes out unharmed, Aoi and Yuji continue to fight Hanami. Once they reach a certain spot, Aoi uses his technique to switch Yuji out with the special grade cursed tool: Playful Cloud. Aoi then uses the cursed tool to harm Hanami. As Hanami goes to counter, Aoi manages to dodge the counter. When Yuji returns to the fight, Aoi tells Yuji to stay away as Hanami is preparing to use a technique.

Once Gojo arrives at the battle site and Hanami decides to retreat, Aoi stops Yuji from going after Hanami as Gojo launches Hollow Technique: Purple at Hanami. After Gojo technique lands a hit, Aoi explains how the technique is so destructive that even they don't know if the cursed spirit is exorcised. After the days event is cancelled, Aoi suddenly appears in the healing ward where Yuji and Nobara are checking up on Megumi. Upon having Aoi appear, Yuji runs away from him who continues to chase after Yuji.

On the second day of the Kyoto Goodwill Event, Aoi convinces everyone that they should continue the event. Aoi then plays a game of baseball along with the other students. When its Aoi up to bat, he is intentional hit by the ball with everyone complimenting Maki for the pitch. After the event are over, Aoi heads back to Kyoto along with the other students and staff.

Death Painting Arc
Days later Aoi and Mei Mei meet with principal Yoshinobu, and nominate Megumi, Nobara, and Yuji to be promoted to grade 1 sorcerers. Afterwards, as Aoi plays a game of tabletop tennis with Mei Mei, he voices how he will be accompanying Yuji on more missions for his promotion. Mei Mei tells 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.