After a sudden school transfer, Kodama Miyagi becomes roommates with the rumored delinquent Takao Ruizaki, whom he affectionately nicknames 'Rutta.' Despite initial apprehensions, Rutta warmly accepts the moniker, leading Kodama to reassess his perception of him. As Rutta stands up against Kodama's bullies, a genuine friendship blossoms between them. However, when Rutta expresses romantic feelings, Kodama struggles to reciprocate. Amidst misunderstandings and distance, Kodama realizes his deep longing to be by Rutta's side.