Osananajimi ga Zettai ni Makenai Love Come

A boy finds himself caught between two girls. His childhood friend, Kuroha, lives next door and is described as small, cute, and cheerful, often acting as a nurturing older sister. Meanwhile, his first love is Shirokusa, a popular school idol and accomplished author. Despite his admiration for Shirokusa, he feels isolated when he learns she already has a boyfriend, leading to emotional distress. During this difficult time, Kuroha suggests an idea for revenge, offering a way to cope with his heartbreak.