This Yaoi manga is why I enjoyed, for a time, these graphic novels but before I explain why I do hope anyone reading the review will please read everything I say because it would be easy to take words out of context and misrepresent me. That the basis of the story in this, and every other, Yaoi series (I don't think I read the entire 'Passion' series - I am not sure if I had access to it all) is the love between two young men. That the opening scenes of the story has one young man raping the other because he so overwhelmed with lust/love is a wonderful reminder of the huge chasm of understanding that lies between us and Japanese ways of thinking. That the 'love' story involves a teacher and pupil is probably even more problematic (though it is the student who rapes the teacher). I thought it was both funny and fascinating, but then I didn't read it as 'gay'. There are plenty of 'gay' manga/graphic novels but no gay inclined Japanese bloke would be seen dead reading this romantic nonsense.
I loved and recommend all Japanese Yaoi as a fascinating dive into what might appear a familiar culture and society but is one deeply different to ours.