Fortune Arterial: Akai Yakusoku EP12 - Red Promise

The episode begins with Erika being in prison. Iori tells Kohei that after a vampire draws blood directly from human they will keep desiring blood more and more. Later, Kohei goes to meet Kaya and Sendo to talk about Erika and try to take her back. Erika shows up but Kaya tries to make Kohei be Erika's servant but Erika refuses. Kohei wants Erika back and offers his blood but might or might not become her servant, for it is what they decide between them. The episode ends with the ceremony which everyone enjoys.