Masaki Sudou works as an ordinary deliveryman, but his real job is a courier for a dangerous underworld transport service that handles any job, no questions asked. His life takes an unexpected turn when he bonds with his standoffish neighbor, Juuichi Uno, over dinner and the two end up sleeping together. The next morning, Uno grows distant, leaving Sudou confused about his own growing feelings. Their relationship is forced into the open when Sudou stumbles upon Uno caught in a violent street fight and gets injured trying to protect him. In the aftermath, Uno reveals a supernatural secret: he is a witch, a being with magical abilities who has been living in hiding from a shadowy group that hunts his kind. Sudou learns that Uno is a familiar—a witch whose magic can be used or stolen by others—and that his pursuers will stop at nothing to capture him. As the two go on the run, Sudou must navigate his new role as Uno’s protector while confronting the reality of the criminal underworld that now threatens them both. Their flight forces them to rely on each other, deepening a bond that moves from physical intimacy to genuine love, even as they face brutal antagonists, kidnappings, and the constant need to relocate. The story weaves together themes of loneliness, consent, and the search for safety, set against a backdrop of yakuza-style violence and witch lore. The narrative arc follows Sudou and Uno from a chance encounter to a desperate struggle for freedom, culminating in a bittersweet resolution where they find happiness together but remain unable to settle down, forever hunted by new threats.