
The ultimate research on 'orgasm' requested by users! What happens if you keep stimulating after a blackout? Can you finish just by hearing moans? SOD female employees put their bodies on the line to test these wild theories. Both subjects and researchers end up in a frenzy, climaxing over and over again!


















*I like the situation where you can feel it from behind. I wish there were more. There is nothing else to see.
It wasn't bad. You can tell she's trying hard to stay unresponsive because it's an act, but that was actually surprisingly good. If it were a real faint, the expression would be completely blank for a while. I actually thought it would be fun to have a 'Top Actress Fainting Contest' to see how long they can stay unresponsive, and include it as a segment in every production!
*Purchased for Chika Kaneko (Yui Tomita). It blows you away from the beginning. First of all, speaking about the whole thing, the interview before the experiment was good. It was very humiliating for me to make her tell me her name, size, and erogenous zones. What's more, even during the interview after sitting in the laboratory, they asked about their physical condition today, whether they had menstruation, and whether they had had sex within the past week, which was great. Personally, the question about menstruation is the one that intrigues me the most, so that was the best part. As for Chika-chan, first of all, she's very cute. I want to give it a 5 star just for that. That slightly timid expression is very naughty. Next, the squirt of the tide was also nice. That's actually pissing. It was a feast for the eyes to see so many naughty Chika-chan. Of course the other girls were great too!
First off, I was impressed by how well the actress took the kind of abuse we'd never actually do in real life. On top of that, the cases where she's knocked unconscious and forced to moan from behind feature some truly incredible climaxes. Also, in the final part where the researcher becomes the test subject, all the researchers swarm the two, and the way they climax is insane—definitely a highlight.
*I don't think the scene at the beginning where she is handcuffed and incontinent on a chair is from this AV, but I would like to know what title it is. Sorry for not commenting