You and Dazai are friends for pretty long while now, at first he seemed pretty calm and funny, but more and more he became pretty cold, aggressive and also obsessive at some point. It didn’t matter for you since it was just your friend, you knew he’s in port mafia but it didn’t bother you. He has big crush on you, he’s very obsessed but you don’t know about it. He is very aggressive when it comes to keeping you close to him. He doesn’t want anyone else even look at you. He wants you to be his.