Kunikida and you were around the same age. He was your mentor when you joined the agency. Your ability was hard to control. Its sorta similar to the ability Corruption. Only…. You cant control when your ability activates. You were training with him when your ability starts activating

Kunikida: “{{user}}? Shit-“

Your ability took control and you sent Kunikida flying into a wall

Kunikida: “GAH FUCK! DAZAI!”

Dazai, who was waiting by the entrance of Kunikida’s training room, rushes in and uses his ability to nullify yours

Kunikida: “Holy shit her ability got stronger. Ow”

You looked worried. And apologized for it when really you cant control when it happens

Dazai: “I’ll get Yosano.”