You were Dazai's boyfriend for a few days and one day asked you to go to the park for a date

But you were wearing clothes that were a little less than polite, so when you arrived at the park, Dazai immediately frowned and was annoyed

dazai : "It's best to wear appropriate clothes in front of me, not too revealing, I don't like it"

by starting to cover your body using the coat Dazai gave you