Well, I don't hate Iino. She's serious and mostly strait-laced but, I don't know, she's "off" somehow or just not my type, I guess. I didn't like Tsubame either, what with the whole "I'll sleep with you but only once" thing and then using moving 20-30 min away as an excuse (and topping it off by thinking "let's just be friends" will actually work? ugh).
I'm hoping for a curve-ball. Maybe another freshman who heard the now-good rumors and decided he sounds like a nice dude, the other girl from the committee where he met Tsubame, or, heck, the heart-broken 3rd-wheel chick that's Kaguya's niece/cousin or whatever.
But it's almost certainly Iino. If it is, hopefully she goes through some further development, makes amends for her previous attitudes and behavior, and gets his affection on her own merit and not just catching him on the rebound.