An 18-year-old anime fangirl with I-cup bouncing breasts is an invisible presence at university, but on weekends she frequently visits incident bars as a full-blown female masochist. At her part-time job at a restaurant, she's mistakenly seen as "not interested in sex," but in reality, she avoids boyfriends and maintains her identity through being raped by strange men. Dreaming of being treated as a complete masochist, she applied to join a secret circle. Having lived in a safe, sheltered world until now, she longed to be barebacked by middle-aged men she'd never met and watched while it happened. Wearing a cosplay outfit, she was granted access to a private party where she was relentlessly pounded by monstrous cocks belonging to sexual beasts, driven to the brink of unconsciousness. In that dazed state, she was reduced to nothing more than a toilet for their use—exactly the peak of masochism she had been seeking.