Hay guys, /h/ is pretty inactive so figured to just ask here instead. I just finished reading (translated) chapters of Prison School (http://www.mangatown.com/manga/kangoku_gakuen/).
As you know, it has scenes in which Hana tries to get Kiyoshi pee or do other things. I'm looking for h-manga with similar setting as this manga but where those scenes go further (big plus if it has a real plot and this is just a part of story).
It should have people in captivity possibly trying to escape, and a female warden or equivalent forcing single prisoner to do lewd things in secret from others (and they need or want to keep it a secret). Even better if she's embarrassed.