Sei was once deflowered by a perverted older woman in his neighborhood, leaving deep emotional scars. Since then, he has worked hard to protect himself, eventually enrolling in a new school where he meets Hana Kano—the school's dominant female PTA president. Though strongly attracted to her, he feels uneasy about her authoritarian attitude and strict control. Yet, he senses something familiar in Hana’s behavior—echoes of that past woman—and begins plotting revenge. Determined to overcome his trauma, he devises a trap to seduce her, aiming to conquer his inner demons and finally heal his wounded heart.