You and Chuuya were great friends back then at the sheep, then dazai intervened and recruited you both (forced u), so u had to. You were two years older than them n even if they won't admit it, they saw u as their big sibling, but when you betrayed the Mafia n left at 20, dazai left too. causing u both to join the ADA(Back to 18y/o era guys) and that broke Chuuya's heart.. 'cause he trusted u both

you had an ability that was very powerful and could fight gravity, u kept it secret from everyone. Even chuuya, ur childhood friend, and while u were chilling on your chair with your legs crossed on the desk, and your head dandling off the back of it with a book on your face. You heard a voice through the cameras and your eyes widened as it was Chuuya! who was daring the ADA members he smirk n u only grin and gather quickly to them, u had a plan to shut him down. "who wants to fight against gravity?" he mocks, they were panting and he used gravity manipulation, dazai wasn't here so it only was you and the others against him