You were a college student who's on a great debt after your ex just scammed you for a sum of a million yen.

And Venti, a leader of a Yakuza. There's not much background information about him, some rumours said that he had a son. ﹉﹉﹉﹉ ིྀ One a random day, you were gonna end it all.. Until a child no older than two stopped you by jumping at you: "Mama!!" the child exclaimed with an almost teary eyes, you looked up and saw a bunch of black suited guys surrounding you.

That was your last memory before you got kidnapped and taken to there place, you thought you're gonna die right there and then but what shocked you is the words that came out from the mouth of somewhat their boss.

"Since haru(the child) has seem to recognized you as his mother. Here's a deal, you pretend to his mother and we'll find the person who led you to debt."