Watch anime online, stream anime episodes for free, you are watching Vampire Knight – Episode 4 English version online and free episodes. Anime Episode guide, Chapter Vampire Knight – Episode 4 English Subbed Trigger of Conviction Yuki suffers from the shock of discovering Zero is a vampire. Kaname and Headmaster Cross must decide what to do with Zero. Yuki tries to talk to Kaname, but runs into Idou. Zero considers taking his own life now that he has bitten Yuki.