Love Interest: What it says on the tin.
Harem Member: Has regular sex with (though to be accurate, more regular sex friends than an actual harem). LI's know.
Bonus Encounter: One off random scenes.
Yeah for now it doesn't feel like an actual harem, more like just a lot of friends with benefits. I assume this will change some in the future though, once he gets closer with those characters, and
some of them potentially even move in with
or close to, the MC. Although, I guess technically speaking as long as they are sexually exclusive to the MC, then it's already
kind of a harem.
I'm not too worried about the harem though, as long as I have the main 3 I'll be happy. For me the other girls are just a bonus.