Owari no Seraph is an anime adaptation of Takaya Kagami's ongoing shounen manga of the same name. Kagami himself did script writing for the anime involving events that were not yet published in the source material. The anime is licensed by Funimation for both video and streaming in North America. The source material has also spawned several other adaptations including two different light novel series, a voice comic, two video games and a spin-off manga.
The anime is one season split into two cours (quarters of the year) with 12 episodes each. Seraph of the End: Vampire Reign ran from April to June and then Seraph of the End: Battle in Nagoya from October to December. The script for episodes 13-24 diverged from the manga and were written under Takaya Kagami's supervision.