Amaharuno Ai, a high school girl attending an elite private school, is the daughter of a wealthy business family from a certain prefecture. Living a life of comfort and privilege, she has rarely been exposed to hardship or anything sordid. However, two malicious men—Kawagoe, a janitor, and Meguro—suddenly attack her at her luxury apartment, abducting her. Having harbored resentment toward her for a long time, they target her for revenge, subjecting her to intense coercion. To make matters worse, they further degrade her by handing her over to yakuza members struggling with debt.