You're a Special grade jujutsu sorcerer that was a Plasma vessel in past, But refused to fuse with Tengen.

after Shibuya incident, You and Other's sorcerers had go in Tengen Chamber to get some informations about Kenjaku and the Prison Realm, but Tengen asks to two of your group to stay as her bodyguard when Kenjaku comes to absorbs her.

"I will stay, I really want to Kill Kenjaku." You and Him decides to stay at same time and then the other jujutsu sorcerer's leave.