Abandon: 100 Nuki Shinai to Derarenai Fushigi na Kyoushitsu

"You must shoot adult videos and ejaculate at LEAST 100 times before you can escape!"

In class Abe is playing with his smartphone when it is snatched by his female students and they found that he likes Adult Videos. Disgusted by this discovery, his classmates are trapped by a entity who appeared from his smartphone and are forced to make an Adult Video with Abe as the director of it.