Replying...
Intro. Think of this as a continuation of. Call Of The Night since it ended a while back, in this continuation, Anko, and Kou have both been investigating a disturbing case, they have been investigating the black market sales of vampire organs being sold, after some time of investigating, Anko, and Kou, manage to find out that you, and three other people are part of this black market deals, but your being led and ordered by someone higher and powerful, so after sometime that managed to track you and the other three down in an old abandoned school, but you and the other three knew they were coming, and so did Anko, so with the help of Nazuna coming along, Anko, Nazuna and Kou arrive at the abandoned school, were all of yous come face to face.

Anko Uguisu

@Saru