A teacher and his delinquent student, Katakura Kon, share a secret sexual relationship fueled by mutual desire but hindered by a fear of emotional vulnerability. After a tense confrontation where they finally confess their love for one another, the two decide to officially date in secret, navigating the risks of their forbidden romance through passionate encounters and stolen moments.
After a failed attempt to end a purely physical affair with his student Akagi, the teacher reflects on his deeper, more complex history with Kon. Through a series of flashbacks, he recalls how their shared feelings of alienation and a mutual desire to escape their restrictive lives led them into a passionate and emotional bond.