After reading volume two of Rosario Vampire, this manga seems like it'll be easier to stick with. The intensity of the drama really shot up at the end of the volume, making it more than just a fluffy shonen rom com with a supernatural gimmick. My biggest problem with it right now is that, for some reason, the manga artist is much more comfortable exploiting Kurumu than Moka, having her be the subject of a disturbing blackmail and stalking chapter and, at one point, having another character call her a slut. I don't know if I'm just too used to the behavioral norms of harem manga to bat an eye, but having a character handled like that seems out of place to me, even if she is a succubus. At the very least, these situations are never presented as her fault, but it still seems somehow off, given the rest of the manga's good-natured tone. If I understood the end of the volume correctly, though, it's about to take a turn away from being a goofy, mildly fan service-y sitcom, which should help to curb that problem. I'm really curious about what'll happen in the third book.