Osa

Despite his efforts of living a normal life as a banker, the life of Toru, the only son of the Yubari Family, becomes disrupted by trouble brought on by his father. When his father’s battle against his rival group the Miike Family ignites, Toru becomes more involved in the turf war than he wished for.

Ayako becomes the mistress of her boss so she can pay her father's debt and prevent him from going to prison for embezzlement.