Sana's first boyfriend, Yamato, was not exactly the looker, but he was kind. And that's what Sana loved about him. So when he suddenly dumps her without warning, her heart is left completely shattered. Having lost faith in the world, Sana vows to leave her past self behind, and transforms... into a full-on delinquent!3 years later, when Sana had all but forgotten how it feels to love, two guys unexpectedly appear in her life. Koichi, the student council president and school celebrity. And... Sana's ex, Yamato?! Sana barely recognizes her ex, who has undergone a complete transformation of his own, becoming a heartthrob teenage actor! With conflicted memories and emotions on the rise, where will our protagonist's innocent heart take her?