The 13-episode series adapts the foundational story arc of the manga. Beginning with Rintaro hiding his identity as a Chidori boy out of shame, the central turning point arrives when Kaoruko catches him looking into her classroom, forcing them to acknowledge the reality of their schools' bitter divide.
The primary external conflict of the season emerges when Subaru discovers their connection and attempts to sever it, motivated by past experiences with male harassment. Instead of retaliating with hostility, Rintaro demonstrates restraint and empathy, earning Subaru's reluctant respect after an incident where Rintaro's friends protect them from belligerent street delinquents. As the season progresses, the boundary wall between the groups dissolves during a joint study session where Saku and Shohei integrate Subaru into their circle.
In Episode 10, Rintaro's domestic past is unraveled: his dyed hair and withdrawal were reactions to middle school teachers and peers who falsely accused him of violence based on his looks, a trauma healed in part by his mother's nurturing environment. The climax across Episodes 12 and 13 takes place during the summer break. Away from the oppressive shadow of Kikyo and Chidori, Kaoruko and Rintaro navigate their feelings at the seaside. In the finale, the perspective shifts to Kaoruko, revealing that her attachment to Rintaro was never accidental—she had admired his quiet gentleness from their very first bakery encounter. The season concludes with both openly professing their commitment to stand together regardless of school prejudices, setting the stage for a fully acknowledged, mature relationship.