Tenrou: Sirius the Jaeger

Summary

Imperial Capital, 1930.
A strange group of people carrying musical instrument cases landed on Tokyo station.
They are called the “Jaegers”, who came to hunt vampires.
Amongst them, there stood a young man with striking serenity and unusual aura.
His name is Yuliy, a werewolf whose home village was destroyed by vampires.
Yuliy and the Jaegers engage in deadly battle over a mysterious holy arc only known as “The Arc of Sirius”.
What truth awaits them at the end…?
With eternal affinity and spiral of conspiracy entwine, the highly anticipated action-thriller anime begins!

(Source: Official Website)