Yumiko wound up becoming my favorite girl in the game. Though that being said her route really isn't anything to brag about. If you're into Kuudere's it'll hit all the right notes and overall it's a pretty good read. But it's not going to make a believer out of you if you weren't that big on her to begin with IMO. I will say overall it had less issues with it than most of the other routes. I found Amane's flashback too long, Michiru's and Sachi's stuff too out there, and Makina's ending kinda meh. Yumiko had the best balance for me.