Owari no Seraph: Ichinose Guren, 16-sai no Catastrophe

The world’s end is approaching, and Guren Ichinose must hide his true strength at an academy for the privileged. Set before the events of the main story, this prequel follows the trials that shape him. As the vampire rule takes hold, Guren faces a world on the brink of catastrophe. The story traces his struggles at school and the circumstances leading toward the disaster described in the main series.