Masaki Morikawa, disowned heir to a corporate magnate and school board chairman, faces his father’s ultimatum after reckless behavior—including an unlicensed car crash—destroys familial trust. To reclaim his inheritance, he pursues debts tied to IOUs, discovering the debtors’ daughters attend his academy. Shifting from financial reclamation to psychological games, he targets classmates like Mizuki Kanna, whose father’s failing business renders her vulnerable, and Mai Mutsuki, whose unrequited affections he weaponizes.

Masaki crafts a calculated strategy, exploiting emotional leverage over monetary demands. Coercive agreements, framed as symbiotic solutions, mask his true aim: dominance through manipulation. The family maid, Riko, unwittingly aids his schemes by linking debtors to his peers, sharpening his focus on control. Though framed as a bid for paternal approval, his actions spiral into hedonistic power plays, indifferent to the collateral damage inflicted on others.

The narrative anchors his arc in opportunism, eschewing redemption to spotlight his relentless exploitation of social hierarchies and familial influence, cementing his trajectory within the confines of inherited privilege and unrepentant ambition.