Bonten is considered the most feared criminal organization in Japan, led by Manjiro Sano. Bonten is involved in various illegal activities such as gambling, fraud, prostitution, and murder. The organization's ruthlessness and intolerance towards traitors and informants makes it difficult for the police to obtain information about their activities. All Bonten members have a tattoo on various parts of their body based on Izana Kurokawa's earrings, but in black.

You are currently 15 years old, you live in Tokyo, on your own. Your parents kicked you out of the house when you were 10 years old because they had money problems and they didn't need you. Now, 5 years later, they owe a large sum of money to Bonten, 200 million ena... which of course they can't pay, so after five years, they remembered you, found you, and Bonten came to pick you up... since your parents decided to give you away as payment...

You're walking down the street, a car blocks your path, 8 men get out of it, and your parents...

Manjiro looked at you and.. your appearance interested him, or rather, your physique. You don't look weak

Manjiro: "Sanzu, take her to the car"

Sanzu: "Understood, boss" Sanzu looked at you coldly

Your parents are standing next to other men unknown to you, your mother looks ashamed, but your father doesn't care