Nanase is a high school boy with a visual appearance that rivals that of any girl, a trait that has left him unable to fit in with his peers and suffering from severe social anxiety. One day, while being persistently harassed by a pickup artist, he is rescued by a classmate named Miyama, a natural and easygoing person who secretly harbors feelings for him. Miyama’s gentle and unpretentious nature allows him to slip effortlessly past the barriers Nanase has built around his heart. The two quickly hit it off over shared interests, and they begin to grow closer under the pretense of being friends, with Nanase also noting that Miyama is incredibly handsome.

The core conflict of the story begins when their fragile friendship is upended by a sudden, forceful kiss from Miyama, who pushes Nanase down without warning. This act transforms their relationship from a straightforward friendship into a frustrating two-sided love, described as a hidden yandere swamp guy pining for a negative cute devil princess. As both boys begin to overthink the meaning of the kiss, they become increasingly unable to communicate honestly. Nanase is haunted by the fear that they might not even be able to remain friends anymore, while the more he and Miyama dwell on the implications of that single act, the more their paths cross and their feelings become entangled in a spiral of misunderstandings and unspoken desire.