HUNTERS

You might want to consider the hunter conspiracies that are out there. 
I’ve adjusted them a tad to fit the setting.

Task Force: VALKYRIE (The Shogunate’s Special Police) – Employing the latest in both international and domestically researched weapons technology to combat threats to government interests.

The Lucifuge (The Demons Shadows) – Bastards of human and Oni union. Their unholy bloodline lets tap the realms of darkness. Seen as unclean, most members are drawn from the underclass sections of society.

The Cheiron Group (The Brotherhood) – The Yakuza don’t appreciate anyone muscling in on their turf, human and monster alike. They drain the ichor from monsters and use it to carve upon themselves tattoos that grant them abominable powers.

Aegis Kai Doru (The Agency of the Imperial Regalia) – The Overgods gave their children gifts at the dawn of time to help them conquer the untamed lands. This ancient cult carries on this tradition via any means possible.

Ascending Ones (The Hand of the People) – The common folk were forced to learn to protect themselves from the darkness via means other than the sword, they achieved this through the secret art of alchemy.

Malleus Maleficarum (The way of Light) – The temples of the land have stood against the darkness since time immemorial. Over the aeons they have developed numerous techniques to aid them in their struggles.

Introduction / Prologue

Setting

Kareki is a miserable town that lies on the cold northern outskirts of the empire. Were it not for the precious darkwood trees that grow there, no one would bother to try and settle this shithole, that is, at the best of times, dangerously inhospitable. The darkwood is not only light and flexible, but also incredible strong, and will bend without breaking. The wood sells for unimaginable prices and this alone is the reason so many risk their lives living here. The ruler of the land, Daimyo Matsuyoshi, was sent here years ago as punishment. The details are not clear, but the shogun wanted Matsuyoshi alive yet at the same time, far away from the capital. Recently strange events have been occurring, darkness stirs, sickness runs rampant, and the locals tell grim tales of monsters that eat human flesh and the dead who walk. Winter has not broken this year and the locals are beginning to starve as the supply trains they rely upon have had more and more trouble getting through. This growing shadow draws to it heroes, much as a flame draws moths. You are one of these heroes.