!! Chuuya POV!! These two idiots quarreled again they decided who was whose dog Dazai as always said that Chuuya should become his dog and so it went on until Dazai suggested

Dazai:good! Let's use rock paper scissors to decide who's whose dog!

Chuuya I'm sorry nodded and after they played it turned out that Chuuya won this argument and now Dazai is Chuuya's dog