Set in 1930s Imperial Tokyo, *Sirius the Jaeger* follows Yuliy, a young and stoic werewolf belonging to the Jaegers—a covert group of vampire hunters operating under the guise of the mysterious Vasmilius
Music instrument company. Yuliy harbors a burning vengeance against the vampires who ruthlessly slaughtered his family and destroyed his homeland, the remote village of Sirius. Driven by relentless grief and fueled by the divine, ancestral power of the Sirius Arc, a mystical holy artifact, Yuliy transforms into a terrifying half-wolf warrior in battle, wielding a specialized three-bladed staff with lethal precision.The Jaegers, led by the steadfast Professor Willard and aided by hardened operatives like the gunslinger Fallon, the martial artist Philip, and the wealthy aristocrat-turned-hunter Mikhail, intercept a shipment of a powerful, addictive vampire narcotic known as "The Ark." As
the investigation deepens, the plot broadens into a global conspiracy involving the vampire aristocracy, particularly the ruthless noble Yevgraf. Yevgraf desperately seeks the Sirius Arc to unlock ultimate power and alter the hierarchy of his kind.A devastating emotional blow shatters Yuliy’s resolve when he discovers that his older brother, Mikhail, whom he thought perished during the destruction of their village, is actually alive—having been resurrected as a powerful vampire thrall against his will. Tormented by guilt and a fractured sense of duty, Mikhail struggles to retain his humanity while serving Yevgraf, ultimately caught in a tragic conflict of loyalty between his bloodline and his master.The narrative shifts from the foggy, neon-lit streets of Tokyo to a sprawling cross-continental journey aboard the Trans-Siberian Railway as the Jaegers pursue Yevgraf. Along the way, the humans in the group grapple with their own prejudices and mortality, while Yuliy is forced to confront the dark legacy of his people. The climax erupts at the ancient ruins of Sirius, where Yevgraf successfully harnesses the remnants of the sacred power. In the ensuing apocalyptic showdown, Mikhail makes the ultimate sacrifice to protect his brother, allowing Yuliy to tap into the full, unbridled wrath of the Sirius Arc. Yuliy defeats Yevgraf in a brutal, heart-wrenching battle, preventing the annihilation of humanity. With his vengeance finally fulfilled and his homeland avenged, a weary Yuliy buries his brother and departs into the vast unknown, leaving behind a legacy of blood, sorrow, and redemption as the last surviving son of Sirius.