Reading Rosario no Vampire II is really a weird experience. How a harem manga with ecchi straight up changing genre into a super-serious battle shounen.
And was it ever really harem. I mean the protagonist was always openly devoted to one girl. Its not like he either encouraged the others or was even indecisive about the whole situation. It was more like a romance between Moka and Tsukune, with hangers on who won't stop no matter how often he declares his love for Moka alone.