Well, I'm pretty sure there's just one... it made it kinda obvious in the ऐनीमे that Zero was Yuuki's "Knight," although a lot of the other characters are वैंपायर as well as being quite chivalrous, so there could be any number of "Vampire Knights," actually..
Okay could आप maybe make the सवाल a little clearer. What are आप asking is it How many मांगा volumes are there? so far there are 13 published in english How many episodes in the ऐनीमे series? there are 13 in both season 1 and 2 who is the vampire knight? well it hasn't been official who the Vampire Knight is but i think it's really obvious it's Zero.
there are 2 knights on one side of a chess board, but i would say that in Kaname's mind, on his side their is one Knight, Zero Kiryu, and many pawns like Shiki या Rima. but if their were 2 knights, i would say the other knight would be Hanabusa Aido, because in the latest chapters of vampire knight, Aido-sama stays to protect Yuuki while Kaname is away and Zero is her enemy. they become closs friends. लोल
There are two seasons, Vampire Knight and Vampire Knight Guilty. There is ONE vampire Knight though, and that would be Zero. He is a (-SPOILER-)Vampire, Vampire Hunter and a Knight in Yuki's eyes. :) Hope this helped ~Razzi
आप mean seasons? Two. Vampre knight and Vampire knight Guilty. But I guess Zero is Yuki's 'knight', in a sense. He is both Yuki's saviour, and the person he (I assume) has all intentions of killing someday. His job, after all is to slay vampires.
Honestly I think आप should read the manga. For me personally I think yuki is the knight....she becomes one bad नितंब, गधा pure blood when she regains her memory and turns out to be kaneme's sister. Just sayin.
The Vampire Knight ऐनीमे series is an adaptation of the Vampire Knight मांगा series. The सेकंड season is titled Vampire Knight: Guilty. It consists of twenty-six episodes, with thirteen episodes in each season.