Really nice. I don't really see a problem with the "cheating" cause' they were quite the open couple. Haru didn't seem to be bothered by it at least (exception for the brat). BUT, I started to read this thinking they would be a reversible couple, but they aren't. Too bad :/
Final note: they sure are some horny bastards, I lost the count of how many times they had sex. They are even worse than the couple on "Hai to Diamond".
Buddy System