Though this will be relatively open world, there will still be a story line that I'll usher us along subtly.
Unlike the earth we are used to, Yōkai been around for hundreds of thousands of years. Most Yōkai live in the Spiritual Realm, a separate plane of existence where millions of spirits reside. Spirits in the Spiritual Realm don't have a physical form, but upon entering the human world, they take on a form that coincides with their nature. The physical shape of a spirit however is not permanent, and a powerful enough spirit will be able to change its physical form at will.
Yōkai commonly travel between realms, and have become an integral part of human life. Many human's choose to become Shōkanshi, or summoners. Summoners are humans who make pacts with spirits to be able to wield their powers. These pacts vary by spirit, and many if not all have some sort of cost, ranging from a food offering or a relic, to blood and the promise of one's soul. Typically, the more costly the pact, the more powerful the Yōkai. However, the more powerful Yōkai also tend to be more cunning and dangerous.
Shōkanshi are found all over the world, doing various things. Some Shōkanshi are politicians, others are monks, and a several band together and form Shōkanshi-Senshi groups. Shōkanshi-Senshi usually work as freelance peacekeepers or mercenaries, though they have been known to be involved in crime as well. Police forces around the world regard Shōkanshi-Senshi's with a careful suspicion, though the majority of Shōkanshi-Senshi are respected for their abilities.
This RP features a group of Shōkanshi-Senshi known as The Tengu Hunters, a relatively new, small band of Shōkanshi-Senshi. The majority, if not all of our players will play as new recruits in the Tengu Hunters. As Shōkanshi-Senshi we will take on missions normally involving Yōkai, be it fighting Yōkai, or saving Yōkai.
Though helping keep rogue Yokai or Shokanshi-Senshi under control, there is a deeper more sinister group hidden amongst the whispers of the world. If they are left unchallenged, a terrible fate threatens to overtake the world and bathe it within a calamity that has not touched the Earth for over many centuries.