Among them is a young "Sirius" man called Yuliy, a werewolf whose home village was destroyed by "Vampires".

The Vampires operate under the cover of the Alma Corporation and seek the "Ark of Sirius" to possibly cure a degenerative disease which is killing them.

The anime aired from July 12 to September 27, 2018, and is broadcast on AT-X, Tokyo MX, BS11, and Tulip TV.

[4] The series is directed by Masahiro Andō [ja] and written by Keigo Koyanagi, with animation by studio P.A.

Mika Sugawara is in charge of the color setting, and Tariki Kiritani serves as the series 3D animation director.