Tenrou: Sirius the Jaeger S01E01 - The Revenant Howls in Darkness

Full moon shines through the quiet night of Shanghai. A young man walks alone, as if weaving the light. Reunited and forming a pack, they head out for a suspicious-looking mansion. In there, a banquet is held by vampires. They call themselves the "Jaegers" who breaks in and hunt vampires down. As the Jaegers head out to Japan, they use V shipping company as their alias in order to spy on the vampires in secret. Just as they arrive, atrocious crimes begin to happen. When all the dots are connected to form one line, Sirius bares its fang.