I also see the anime a wile ago, and i like it, but surely it lack action, from my point of view, but is supose to be comedy romance.
Spoiler:
Also, i'm the only one who think that kari(chibi vampire) could have develop some action plot, like fights a war or something like it
, because i think it have enough back story to take that turn, as far as the anime is, it have what it takes to add action to its genre.