JUQ-884 A room I couldn't escape before I had 100 orgasms. - Amamiya Kasumi

One day, Kasumi and her husband, Satoshi, are suddenly imprisoned by a mysterious man. Besides the two, there's Sagawa, who seems to know something; Machida, with a fearless smile; and Reiya. The panic is brief, but a voice says, "I'm going to have sex with you now..." and a timer begins to count down. Kasumi and Satoshi are pressured by the surrounding men to have sex in public. However, just as she struggles to adapt to the unusual situation, Sagawa and Machida attack her...