Vampire knight was made from the manga vampire knight in 2008 i am quite new to the series so beer with me. if u liked anime's such as fruits baskets you'll love vampire knight and if u really loved vampire academy and the other boeken in its series you'll love vampire knight, but if u liked twilight i suggest u watch it, it will turn u off that stupid phenomena and you'll love vampire knight real good decent vampire material unlike twilight which is suky, zero will make u loose your obsession with edward cullen trust me it's one of the best anime's ever made
i hope theres a third season xD