Female Teacher, Honoka Ashina, Who Was Developed Nipples By Using Nipple Drugs That Induce Nipple Come Repeatedly Until She Came Consecutively

A female teacher, Ashina, receives a blackmail letter after a video of her having sex at school with a male student, Shiina, is leaked. This triggers her descent into a pit of carnal desire. Another male student, Higashikawa, who had been secretly filming Ashina, forces her into a one-time sex deal under the promise of not exposing the footage. Higashikawa, a big-breast nipple fetishist, makes Ashina drink an aphrodisiac he bought online that makes nipples abnormally sensitive, and begins tormenting her nipples with his fingers, tongue, and toys. Her nipples are developed to the point of immediate orgasm and remain constantly erect. The one-day promise is broken, but Ashina is so pleasure-fallen that she has no choice but to accept it, unable to suppress her lewd desires. Eventually, she becomes a perverted teacher who can't hold back from seeking nipple orgasms herself.