A college student named Yuzu lives in a dormitory and adores his kind and handsome best friend Natsuki, who lives in the room next door. Their university life is smooth sailing until a conversation about girls sparks Yuzus imagination. As a virgin, the fantasy causes him to become aroused, leading to an impulsive mutual sexual act between the two friends.

The next morning, desperate to avoid any awkwardness between them, Yuzu charges into Natsukis room. There, he discovers that one entire wall is completely plastered with photographs of him. This revelation unveils Natsuki as not just a close friend, but a heavy-handed stalker with an intense and obsessive love.

The story unfolds as a high-tension stalker romantic comedy. The energetic and cheerful Yuzu finds himself loved by this obsessive stalker. He attempts to reform Natsuki back into a normal friend, but every effort fails, and he gradually finds himself won over by the persistent and comical affection. The narrative arc follows this comedic struggle between a desperate attempt to restore normalcy and the inevitable succumbing to a dangerously devoted companion.