Reika is such a dick.
But not literally, cause you know that dicks are not allowed here.
As a fan of futa, I take offense to that.
Anyways, since so many yuri stories are focused on high school-age characters, there's a tendency for them to make irrational, emotionally-fueled decisions. It's a common criticism I've seen in discussions, but I think that people often misunderstand the way these characters are presented. Teenage characters make rash decisions because that's what teenagers DO. The character doesn't have to make the same decisions you would in order for you to understand and even like them.
Luckily, it seems like people are able to sympathize with both Rui and Reika. Which is great. I just want people to keep my point in mind.