Restrained Female Teacher Gets Consecutive Orgasm!

An evil minded doctor takes over a class in a women's school, to conduct
a research experiment concerning the aging society. According to his theory,
the more times one gets orgasms, the higher the pregnancy rate becomes.
Then a female teacher stands up to protect the students by sacrificing herself.
But she must hold off orgasm as he takes one student for one orgasm...
Will she be able to endure the doctor's machine r*pe...?

Situations:
restraint / consecutive orgasms / rubber / leather / high heals / machine r*pe /
clitoris caress / double penetration / urethra / drug / crying face / cross-sectional view etc.

1 cover art / 1 cut for the cover
24 page main content
1 color page
3 page bonus (character settings)
30 total pages