Servamp manga volume 21 features story and art by Strike Tanaka.

The count's return draws closer by the moment! Having successfully assimilated the power of his demon, Kuro returns to Tokyo along with Mahiru. However, the ritual to begin the count's resurrection has started early, triggering disasters throughout the city. While C3 and the other Servamps work to protect the city, Kuro heads right to Tsubaki, who is performing the ritual!