During a chaotic P.E. session, a careless classmate mistakenly swapped Shizumori’s underwear with his own, leaving her with a locker full of unfamiliar, unlaundered briefs. Unaware of the mix-up, Shizumori continued her day without realizing she was going commando under her school uniform.

It wasn’t until she returned to the locker room that the truth dawned on her. As she bent down to retrieve her bra, Ozaki appeared, holding up her soiled underwear with a wicked grin. He casually tossed the rest of her clothes aside, leaving her vulnerable and exposed.

In a brazen act of voyeurism, Ozaki snapped a compromising photo of Shizumori’s bare, underwear-less crotch, effectively trapping her in a compromising position. Later, he used this lewd image as blackmail, accusing Shizumori of being an “exhibitionist” and demanding sexual favors in exchange for keeping the incriminating evidence to himself.

Now, Shizumori finds herself in a compromising situation, forced to submit to Ozaki’s perverted desires or risk her secret being exposed to the entire school. This is the twisted tale of how a simple wardrobe mishap can lead to a web of blackmail, shame, and unwanted sexual encounters.