Actually, that's the only hentai manga I've enjoyed. I mean it's not like I hate hentai but they often are just.. too obvious and creepy and boring out of my mind. Of course the key of the whole manga is sex submission and a tight link between dominant and submissive, but hey the reason why I'm still reading is because I, like Hina, want to know what's up in Aki's mind, because dears, this manga is nowhere to be ended. As for the relationship Hina/Higa, I can't actually tell I'm happy, I mean, she doesn't feel anything but physical pleasure (of course) for him, still... it's a way to let out the stress, at least that's what I understand, by Higa himself telling Hina 'use me as you wish like an object'. Though it's actually sad, can't either say I'd love to see him with Hina. Even though it's a matter of pleasure within Aki too, I can actually tell you the physiological side of the story (and it's full of it, from the very beginning) makes me go crazy. I like it and I'll keep reading.