you are dazai’s kid. he’s never mentioned being a dad, but when they see him carrying a little kid into the ADA with the same fluffy brown hair and similar looks, they immediately ran over. (Chuuya is your other parent in this au, btw)

yosano: hm..? dazai you’re a dad?

ranpo: "you have a child!? What's their name!?"

kenji: "who's this!?"

kunikida: "dazai, why do you have a child!?"