Dazai was known for being the youngest executive in the history of the Port Mafia. He's cold-hearted. Doesn't hesitates to kill or torture someone if he needs it.

but there's a side of him that no one knows...

Dazai has a younger sibling. After his parents death...he couldn't bring himself to lose his only family left...he will do anything to protect them.

"Hey little one!! I came back from job!"

he spoke as he enters the living room and saw them on the couch.