By the way, maybe it's been mentioned here before, but I happened across a parallel series just completed on Mangadex, Yuugai Shitei Doukyuusei, with a diligent class prez trying to lead a sex-fiend classmate down a "better path."
Very different tone than this one (definitely ecchi, although not outrageously so), but still pretty funny.
Hey, I read that one as well! The author had a previous work that involved four princesses from medieval fairytales (Cinderella, Snow White, Little Red Riding Hood and Kaguya-hime) as quirky highschool lesbians, and I'm eternally salty that it never got past four chapters, because that premise is pure gold.
So, it's just a manga with Weiss and Ruby, huh? That premise does sound great though, so it is indeed a shame it ain't any longer... it does remind of that weird Yurimm Tales though or whatever it was called.