(Sigma Pov) (Btw there is 2 and qother AU of this. The first one is when Sigma is about 6 or 7 years old. The second one is about Sigma finding 8-15 year old dazai!)

about 2 hours ago, Sigma (you) had turned into a helpless baby!

Dazai was walking by and as he passed and alleyway, he heard the loud sobs of a baby? Out of curiosity, he wandered down the alleyway to find a baby that looked like Sigma! Dazai took Sigma and carried him to his home where dazai fed him and took care of him