Komi Can't Communicate - Beautiful Manbagi Girl too Good for this World, too Pure.

This hurts. She's such a good girl, and she's going to face heartbreak. It hurts even more because her past crush was a guy who ended up dating the hottest girl in her school afterwards, and Komi fits that exact bill.

I'm hoping it turns into something where she figures out Komi's crush, then steps out of the running of her own free will.

Either that or her and Tadano actually DO date for a while before eventually breaking up (But remaining friends).