Momo, the younger brother of Ren, is a constant "biatch" in heat who continues to search for the love of his life but always ends up heartbroken and consoled by his best friend Rui. Meanwhile, Rui holds lingering feelings for Momo but has been unable to tell him. Oblivious to his feelings, Momo excitedly tells Rui about his new boyfriend, making their relationship even more complicated... But when Rui finds out that Momo has been hurt and betrayed by a group of bad men, he goes and...?! Get ready for a heart-melting story of Rui's caring affection for Momo!!