Kare to Kanojo to Kanojo

Who doesn't know Kenta? Popular, smart, kind, and all girls' idol. No wonder, Misuzu, very beautiful and popular girl, is his girlfriend. But, everyone can tell that recently Kenta has been with Amika, a childhood friend of his. Well, does Amika really go out with Kenta or is it her that take Kenta away from Misuzu?