Blood oath: The way of shadows

In the underworld of 1990s Japan, where loyalty is paid in blood and betrayal means death, the Syndicate rules from the shadows. Their deadliest weapon? The Umbra Division—an elite squad of assassins trained to kill without hesitation.



Among them is Ren, a cold and ruthless killer with no memories of the thing he lost. He knows only one purpose: the mission. Alongside him are warriors just as deadly—each with their own pasts, scars, and reasons for walking this merciless path.

Each assassin has mastered a technique that kills faster than thought—be it blades that bleed memory or eyes that bend perception. Together, they are nightmares stitched into human flesh, under the neon glow of Japan’s skyline, every assignment is a battle for survival.



But as the Umbra Division is sent to eliminate increasingly dangerous targets, whispers spread of an enemy even the Syndicate fears. A masked figure known only as ‘Y’ begins leaving cryptic messages and dares to even challenge the most powerful forces of the underworld with techniques long thought forbidden… , threatening to shake the very foundations of the whole world. And for Ren, the path ahead may force him to question everything he thought he knew—about his past, his purpose, and the meaning of true strength.



Loyalty is an illusion. Death is inevitable. The only way to survive… is to kill first.