This movie is something... peculiar.

It's about a freshman girl, Yuzuki, who just enrolled in a school and that got herself into something that will change her school life: The Torture Club.

The Torture Club is a renowned club at that school. Girls there are trained to be strong in body and specially in mind.
Things such as family and military matters (spies and etc) seem like to be associated with the club, but nothing of that are much explored.
The club has sexual tortures -BDSM/SM- as one of its main activities, other types of torture (including psychological ones) are also used - some are even nasty but they are quickly done.

Being a renowned club, the rules are very strict, and one of the rules is: romantic relationships are forbidden!
That is where lies the future of Yuzuki, Aoi and of The Torture Club !

PS: The tortures are not just about torturing (and being tortured) for the sake of sexual pleasure, there are many times where the tortures are used for other purposes - and this is where I personally didn´t enjoy. Although... I guess it couldn´t be helped since this is part of what is this movie; and there is also the fact that other people might not be bothered by this 'other purposes' as I was.

The 1/3 part is light with a touch of comedy;
The 2/3 part is the creepiest half associated with drama;
The 3/3 part is where the drama and emotions are on their fullest;

About the ending itself, it´s hard to pinpoint whether it´s one the classic endings: sad, bad or happy ending. But I can safely say that the ending boosted up my final score hehe~