MFTH-007 Clear-headed and quiet, but super interested in dicks? Too clumsy! Can't refuse when asked! Makes you grope her tits, jerk off her ass, and demands dry humping! Can't hold back and ends up with raw sex to extract cum! 【The Endless Curiosity of th

I heard that the Biology Research Club was recruiting sperm for an experiment, so I went to try it out and got hired on the spot! A cute science girl made me cum over and over!
"Can you come a little more?" For research purposes, I was fucked until I couldn't produce any more sperm!
Pure and quiet, but super into dicks?! Too clumsy!
Can't refuse when asked! Let her grope my chest, use her ass to jerk me off, demand frottage!
Couldn't hold back against the rubbing dick, so I went for raw insertion and semen extraction!
Want to collect it right away? Please masturbate in a comfortable position
Can I help with something? By the way, can you still come?
Directly? ...It's fine, but can you jerk me off while doing it?
If that's the case... there are other collection methods. Should we try them?
Please rub it on my ass
Um, next time can I have you put it between my legs?
Amazing. It seems like we can still collect some...
Should we lie down on the bed? You can't come yet! Don't you want to insert it?
We're out of condoms, so I'll just insert it like this
【The Biology Research Club's Endless Curiosity 03 Rin-chan】