A Broken Heart Ally: Brother wears woman's clothes for his sister

Shouta has long been in love with his childhood friend Mei, but he harbors deep resentment toward her brother, Chika, for constantly interfering with his attempts to confess his feelings. Everything changes when the devastating news of Mei’s new boyfriend leads to an unexpected sexual encounter between Shouta and Chika. Determined to put the incident behind them, the two form an uneasy alliance to sabotage Mei’s relationship. However, their scheme requires Chika to disguise himself as a woman, and despite bearing no resemblance to Mei, Shouta finds himself struggling with unforeseen emotions stirred by Chika’s feminine appearance.