How have I not come across this before? Yuna gets captured and proved to be a heretic. Apparently only heretics orgasm. The result is that she gets gang raped and tortured.
Bonus points to the author for having her electrocuted until her nipples and clit are fried off, then using healing magic to fix her up so she can do it all over again. Genius. 🙂
Script: The Rape of Yuna
Finished gallery by Amalthea: EXHentai