Leading Prestige's exclusive actress "Yuki Rumina" to the extreme of pleasure, the 'trance state'! In order to give her, who says "av shooting is a reward once a month," an experiment that evokes pleasure she has never experienced before. The first extreme teasing. Her hands and feet are tied, and she continues to caress, avoiding her nipples and clitoris. Despite feeling a great deal of stress from the endless teasing play, a veteran actress is introduced as a further trial to her, who can't help but wet her pussy! Her face contorts with jealousy as she is shown someone else's sex in front of her eyes. Soon, when she is mercilessly stimulated in her pussy, which has become even more sensitive, her beautiful body shakes greatly and she reaches the extreme of pleasure... Experiencing countless convulsions and orgasms in a total of 4 experiments, she climbs to a trance state!