The Torture Club (Blu-ray release 2014-11-21) is a live action adaptation of the manga Chotto Kawaii Iron Maiden, about a girl joining a torture club in a prestigious girl school.  Wikipedia says this is a lesbian romance movie, which is correct, but it does not mention that the movie features SM from start to finish.  The torture club has a policy of no love, because love is considered to make people soft, against the toughness the club members train for.  I don’t like watching SM, but I find this slightly more tolerable because it looks fake sometimes, the torture becomes an expression of love, and watching cute girls do it is easier for me than watching mature women do it.  But still, I would not recommend this to anyone unless they like the manga or like SM.  (There are also masturbation and lesbian sex scenes.)