Based on a game by Mink's M no Violet division.
Before Ren Nanase was ever a night shift nurse, she was a sexy
coed at a nursing school. Hearing rumors that one of the faculty
is a rapist, she does exactly what any model citizen would do and
confronts him about it. Unfortunately, things go downhill from
there, and she winds up being his sex slave, getting a crash
course in depravity. But in the middle of that perversion, could
there be a hint of purity?