第12話: Zeroを救うため、優希が静香との血の契約を受け入れる
2008年6月24日 放送
Yuuki learns that Maria's true identity is Shizuka, the pureblood vampire who bit Zero and turned him into a vampire. With this information, Yuuki accepts a deal from Shizuka and offers her blood in order to save Zero… (Source: Viz Media)