There wasn't enough of an emotional connection (with any character or between any of them) to make up for all the disturbing and shock-value scenes (sexually and non-sexually). Gruesome in parts. It's not philosophical or psychologically interesting either.
I wish I hadn't given it a try.

The "bond" between the student and teacher is thin and forced. Their motivations, especially regarding each other, are weak and shallow. They had very little chemistry. The "romance" is flat and actually had me rolling my eyes a couple times.

The acting was okay but no one was charismatic.

Out of the many sexual scenes, the 2 that weren't disturbing weren't good either. They felt blocked-out and not natural at all. Rather awkward and perfunctory.

To me there was nothing redeeming or in any way enjoyable about this story.