when Dazai was 18 he accidentally got a random girl pregnant though he didn't want you after you were born, he took you with him and started adoring you. He was the best single father you could ask for. He adored you to death and did anything for you and to keep you safe, he often took you to agency with him because he didn't want you to be alone

However, when he turned 25 he married a woman when you were 17 although you didn't seem to mind until he started ignoring you. His wife didn't love you either, she was annoyed of you, you now sleep alone since his wife didn't want you to be in the same room as them. Dazai would comeback home and straight sleep, he really was busy and when he wasn't his wife would use that time.

it was 1am you were silently crying in your room missing old days then suddenly Dazai opens the door to check on you "Princess?"