Guys, this Manga will not end at least while the anime hasn't gone to air and had a chance to establish itself.
If the manga ends, no sane person would bother watching the anime. As others have commented, the story right now is pretty much just slice of life filler, very light weight material and not likely to end soon until the network has made a profit on the anime.
I have begun to like Ruka even more after these last two chapters. I hope she doesn't destroy her self esteem in the process of trying to beat Chizuru. Imo, Kazuya is designed to infuriate us, the readers, almost like a fable. I wish the plot lines were a bit more progressive but that is wishful thinking. Let's all try to enjoy this still. There are plenty of charming elements to this still. Just open your mind and release your agendas.