Touma and Takaya have been friends since they were kids, but Touma's feelings for Takaya have gone unnoticed for a long time. Despite Touma's tough exterior and critical tone, he struggles with expressing his love and regularly puts himself down. Adding to his troubles, Takaya has started a romantic relationship during their time at university, and Touma must endure being around the new couple as Takaya's close confidant and "nursemaid."
Meanwhile, Touma has developed a close bond with Yonezawa, a fellow member of his club who holds a higher rank and possesses an enigmatic personality. This connection causes Touma to undergo intense and arduous transformations in his unrequited love journey.