Ui Ui

Ui Ui is a character in Jujutsu Kaisen. He is the younger brother of Mie Mie

Current Arc
On October 31, Ui Ui is with his sister and Yuji at Aoyama Cemetery while Gojo handles the problem in Shibuya. When Mei Mei gets a call about a certain appearing at Meiji-Jingumae Station, Ui Ui along with Mei Mei and Yuji head out to check up on it. Once they arrive at Meiji-Jingumae Station, They are informed about situation that is happening at the station. After being informed, Ui Ui and Yuji wait by an entrance while Mei Mei uses her power to spy on what is happening in the station. When Yuji gets inpatient, Ui Ui tells Yuji to calm down while his sister is checking out the station. Once Mei Mei is finished with her task, he listens as Mei Mei explains everything that is happening in the station. After listening to this, Ui Ui heads out with his sister while Yuji enters the station through a different entrance. When the curtain has been raised, Ui Ui informs his sister. The two then heads to B5F platform to wait for Yuji.

Once Yuji arrives at their location, the three head off to were the trapped people are at which Ui Ui carries his sisters axe along the way. While running, Ui Ui gets angry at Yuji for not accepting his sister compliment. Once they arrive at the station, they notice that only one person is their. Ui Ui, along with Mei Mei and Yuji, then head towards Gojo's location, but stop when Yuji is suddenly contacted by Kokichi. Ui Ui listens along with Mei Mei and Yuji, as Kokichi what had happened to him and the situation that is happening in Shibuya. After Kokichi explains everything to them, Ui Ui decides to help his sister face off against Cursed users while Yuji heads back to help Gojo.

Once the Cursed Users get close enough, Ui Ui prepares to fight them along with Mei Mei and Yuji.