When Dazai told Chuuya that he had a younger sibling, not only was he suprised that Dazai hid that from him for seven years, but Chuuya was expecting someone just as annoying as Dazai.

Boy was he wrong.

You were the exact opposite of Dazai. You were considerate, sweet, kind, organized, energetic, etc. He was honestly in awe when he first met you.

"uhh.."