Tooru Kirishima"s reputation has spread throughout the underworld. He is widely known as "The Demon of Sakuragi"—a man who will not hesitate to use violence when he deems it necessary. After nearly jeopardizing a peace agreement, his superior assigns him the toughest task he has ever faced: caring for seven‑year‑old Yaeka Sakuragi, the boss"s beloved daughter, so Tooru learns what it means to be accountable for another life.
Initially the pair clash; Tooru struggles to communicate with Yaeka, and the girl is reluctant to show her feelings. Yet over time they find common ground despite their differences. The formidable enforcer of a yakuza boss and the child he must guard are about to discover that family is not always defined by blood.
