Ayano reaches a massive weight that leaves her completely immobile in her bed, in a messy apartment. Her friends Miyuki, Moemi, and Rio, already noticeably obese and soft, take devoted turns caring for her: feeding her, bathing her, moving her heavy folds, and attending to her every need, while they themselves continue to gain weight with pleasure. Ayano becomes national news as an extreme case of voluntary obesity, generating debate, criticism, and public fascination that influences more young people. Her university offers her a special 100% online program, personalized classes, and logistical support to continue her studies from bed, in exchange for her voluntary participation in a medical-psychological study on extreme weight gain.