The MC can end up having Melody (actual relationship) and then 2 other girls who are allowed sometimes to be with the MC (Sophia and Xianne). It's not a "perfect" ending, but it's possible. So technically I guess you could say it's sort of what Otaku describes. But it's not really a harem, though. It's a relationship with Melody only, with occasional sex including the other two when Melody specifically allows it. That's not actually a harem, so you're right. I did know what he was referring to, however.