Is the encounter between humans and monsters a path to destruction, or something else? "I came to eat you." The mysterious girl Shiori suddenly appears, gently taking the hand of Hinako, a high school girl living alone in a seaside town. Having come for Hinako, who possesses a special body that attracts yokai, Shiori vows to protect her until she matures and reaches her peak condition, and then she will devour everything. In the near future, Hinako, who has been sentenced to an unreasonable death, feels a whirlwind of emotions in her heart— "If it's this person, then maybe I can..."