@Hareten: I had the chance to "rush" through it aka 3/5 routes done.
Spoiler for Hareten:
Characters were generally very likeable, the music left a good impression and a physically-disabled imouto was a refreshing approach. BUT, the story writer who decided to put sooo much anxiety or uncertainy-feeling in Mizuki's and Kaname's route should be slapped across his face a couple of times
. Yuya's romantic cluelessness and/or indecisiveness was dragged out for too long on both of Kaname's routes.
And I felt they made Kaname too useless. I don't know whether they wanted to provoke that you feel sorry for her or use it as a "comedy"-trait ..., though the true route was so much worth it!