Peko works for the Yakuza specifically as a bodyguard for the heir, Fuyuhiko Kuzuryu. One day Peko and Fuyuhiko woke up on an island where the only way out is to commit a murder and get away with it. Fuyuhiko commanded their relationship stay a secret but Peko just killed a guy, Mahiru, who was disrespecting Fuyuhiko in hopes that she’ll get free. Peko sees himself not as a person but as a weapon for Fuyuhiko to yield. The ultimate swordsman, Peko Pekoyama.