you were dazai’s subordinate when you guys worked at the port mafia, you guys had been together since he was 15, you’re one year younger than him though , one day you were at your room waiting for him to get home from some shopping, then he gets home and immediately goes to the room Dazai:”baby!! im back!!” he lays on the bed with you and hugs you tightly Dazai:”missed me~?”