Ok, i dont usually say this about many mangas but...... ROSARIO VAMPIRE ROX!!!
it has a perfect amount of adult humour, immature humour, comedy, action and storyline!!
the only downside to this manga is that the battles between moka and the monsters all end the same.
it's all she has her rosario pulled off, tsukune is almost dead, moka bites him and infuses her blood, tsukune turns into a rampaging human x vampire, he punches the monster, blood comes out of their mouths and it just goes over and over!!!
But other than that, the art, story and characters are totally awesome.
If you enjoy Ikki Tousen or any teenage type manga or anime, i recomend Rosario Vampire