Rosario + Vampire Lesson One: Vampires

I like the idea for this one: absolutely average teen only able to get into one school, a school for monsters. I'm not sure I like the execution. So far each story is essentially the same. Tsukune is threatened by something, he worries about being exposed as a human, when Moka arrives to help he must take off her Rosario to unleash the beast. I hope it expands from the formula because it's already feeling a little stale.