Tired of his dull, monotonous days, shy Monota finds his life suddenly changed when Ayumi, a girl living in the same apartment building, appears before him. Despite being strangers, Ayumi casually strikes up a conversation, and inexperienced Monota quickly falls for her. Though their personalities are complete opposites, the more time they spend together, the deeper their attraction grows. Even the smallest moments in daily life bring them closer. Here unfolds a warm and captivating story of their blossoming relationship.