Heh. She is legit not as hot as most 90% 98% of the H-game princesses out tehre, that's true. But honestly, if she was a girl you knew IRL, you'd think she was "pretty cute", maybe kind of a butterface (rockin' body, kind of a meh face), and be OK with that. I actually like that she looks a little different.
Besides, I have a theory here. Bear in mind she's jailbait right now, guys. And MM has already confirmed there will be a time jump. (Please, please, PLEASE, do not let it be tied to non-avoidable pregnancy fetish. I can't handle another good game being wrecked by that shit.) Given the well known H-game phenomenon of teenaged females being mysteriously biologically delayed by a few years, I suspect that between 17 and 18 she'll have the sort of "blossoming" years that most girls get between 14 and 16, and she'll come out of the time jump with a noticeably prettier face.