In a world where nipple tampering has become a part of daily life, sensitive female students end up climaxing in front of everyone without realizing that they are being teased.

"Are your nipples sensitive today?" A devil's hand sneaks up on the J● girls who are going about their daily lives... Invisible humans that no one can see play with their sensitive nipples without them noticing! You can do it on the train, in class, or in the library! In the end, even during sex with my boyfriend, he pinches my nipples...? ! Welcome to a mysterious world that you shouldn't feel!