Jokyouju Choukyou Seminar ~ Suit no Shita no Ureta Shitai

Reina Kasahara.
Young and beautiful, studied overseas, and teaches at a university now.
Steadfast and irreproachably professional, she embodies perfection.

One day a student comes back to the seminar hall after forgetting something, and hears a strange noise. Peeking through the door, he spies Reina masturbating herself and moaning deliriously.

He quickly takes her photo, seizing control of her career... and then...

"Ohh, oh! More, more, your sperm feels so good, put it in deeper!"
In the reverberating seminar hall, Reina's voice takes on a new level of perversion!

[From DLSite]