If you're going to be my woman, I can keep quiet about it, right?'' The sadistic gangster has taken hold of my weakness, and I do as he's told...!? Mao, who is both talented and beautiful, has a secret. Ta. Mao hides her past and lives her life as an honor student, but a transfer student, Jun, who knows about Mao's past, appears before her. Jun was the 7th generation leader of a group that had been forced to take advantage of their weaknesses. Falling in love with the heir of a gangster...? This love may not be easy!

The house Jun was brought to is a mansion of a yakuza!? Jun's family lineage is a yakuza.