MKON-005 - My librarian girlfriend got NTR'd by the gym teacher and turned into a cum-dumpster for the whole school.

Miyuki-chan looks so pure and insanely cute with glasses in this one. The highlight is the scene where she's blindfolded and restrained, forced to squirt; being blindfolded makes her body even more sensitive, leading to constant spasms and multiple climaxes. Miyuki-chan is the best.

The process of her falling might appeal to those who prioritize the scenario. However, the actual sex scenes feel sloppy, as if the actor is just satisfying himself rather than trying to make Arisaka-san feel good. Even with multiple partners, there's no careful teasing to bring her to climax; it's just mindless thrusting.

I get the concept of a delicate girl turning into a sex toy. If that's the case, they should have put more effort into acting out that delicacy to really push the contrast. As it stands, it's just another generic sex-toy flick. Also, the scene where she's tied to the desk—why not go all the way (internal ejaculation) while she's still tied up?

The story is about a diligent library committee member who gets blackmailed by a scumbag PE teacher. The scenario isn't bad, but it's just a passable effort with no standout developments. However, the scenes after she's reduced to a sex toy were very exciting.