Thousands of years ago, the human race was saved from destruction by an angel; his name: Death aka The Grim Reaper. Death created a barrier to keep the Material World (Earth), The Underworld (Hell), The Netherworld (Purgatory), and Paradiso (Heaven). This barrier was made to keep balance, so that one group would not outweigh the other. However throughout the eons, the barrier has weakened, causing cracks which allow weaker demons and deities to slip through causing minor havoc in the Material World. The worlds have been at odds with one another, but Grimm as he prefers to be called by his friends, has managed to keep a minimal balance as well as he can by himself. He eventually began creating new Reapers to help him with reaping the dead while he kept the balance. This worked for a while, until greedy reapers began wanting more power. They had managed to get a secret to the demons of the Underworld on how to get their power across to humans to do their work for them. Some demons were excited about this, others thought it was a waste of time. Despite this, the birth of Witches and Wizards was caused, making Grim's job that much more harder.
To combat this, Grim has created contracts that he uses to hire people who have died tragically, due to their own actions. By agreeing on specific terms and conditions, they are allowed to continue living for a while longer, until the contract is completed. However, in return they must help grim with his demon and angel problem. If they do not follow the contract, Grim can stop the contract at any time and send them to where he deems they deserve. As king of the Netherworld, he is able to send them to Purgatory if he deems it necessary.
Now, the crack has widened once more, and Grim is worried that more demons will begin coming through, or perhaps even jealous deities. A large power is beginning to amass, and Grim knows this, but he has to find a way to stop it, by using his Contracted and those willing to help him. To do this, he has even created a school for the younger more inexperienced Contracted to help train them, as his own soldiers in a way.

Races
Humans: The weakest of the races, yet adaptive, allowing them the easiest way to being allowed into the Contracts. They are very versatile using technology and their hidden reserves of Spiritual Power to protect themselves. However, most of the human race don't even realize what is going on between the realms, oblivious there even are other realms.
"The common non-magical race, the humans are an unfortunate race placed in the middle of the war going on. Most are blissfully unaware of this, while others hunt down the demons and creatures that threaten their way of life. Those that are lucky, or rather unlucky enough, to meet The Grim Reaper become contracted. They sign a contract which binds them to service to help Grim fix the balance. Angels, Demons, power hungry people, all are part of the list that the contracted must take on. Those humans that delve into the dark arts become witches and wizards, while some are willing to use these powers to defeat other demons, there are some that wish to use their power to become stronger themselves." - A quote from the Book I was working on.

Demons: Despite the name and home, the Demon race is not all bad a minority only wanting to go to the material realm for a change of pace. Feeding however, is a big no no that gets them put on a black list. Demons vary nearly as much as the human race and are much stronger. However, many lose in battle due to hubris, and the low amount of Spiritual energy that they have.
"The Creatures of the Underworld that have begun to come through the cracks in the gates between worlds to earth. Some are hungry, others are lonely, and some just want a change of pace or some fun. The demons come in a few types, including incubus, succubus, nekomata, Sins, residents, and newbred.
-Incubus/Succubus: A breed of demon that needs life energy to sustain themselves, becoming youthful in appearance in the process. To do this, they disguise themselves as a rather seductive human, and make love with the victim, draining them in the process. Some choose to only take a little bit, shaving a year or two from the human, while others choose to drain the human dry. They are usually neutral to politics, but if it benefits them they usually will help that person. Some have been known to seek repentance to become a human or an angel, but it is a very rare occasion that it happens.
-Nekomata: Cat-like humanoids, they have the ability to turn into a large footed cat for better mobility, and have a natural claw attack. They are a fun loving race with a love of tuna. However, they are known for not being aggressive unless it is to keep themselves alive or for a shiny object.
-Sins: Demons based on the 7 sins. Some are ironic in what they are, as they are based on animals. They are Wrath, Pride, Greed, Gluttony, Envy, Sloth, and Lust. They are created when a human goes to the Underworld and have a single sin as their main problem. Wrath is based on a Bear, Pride is Lions and Tigers, Greed is a Crow, Gluttony is a Frog, Envy is a Snake, Sloth is a Turtle, Lust is a Rabbit. Each of these Sins have different abilities that works for them helping their own punishment of others. They seek out souls to eat to gain more power, though some are not as proactive as the others.
-Residents: Residents are those born and raised in the underworld, with nothing but hate, anger, and sadistic tendencies burned into their skulls. Most are born with oddities, be it a strange hair color, horns, antenna, wings, or even a barbed tail. These residents aren’t always bad though, some try to find a way to experience the other worlds, and it usually ends badly. Their immense physical and magical strength usually frightens other species.
-Newbreds: When a human is brought to the underworld after dieing, they slowly become tainted, and become a Newbred, like residents they have become a strong creature that frightens others, but, they are not near the same level as their residential counterparts, usually gaining horns, antenna, or a barbed tail only. Though, stronger Newbreds may gain vestigial wings, or even a third eye." -Quote once more

Angels: Angels are the holy beings that inhabit Paradise. Most angels see humans as children needing to be guided, and see demons as beneath them. Spirits and monsters they see as unfortunate as most of them will never make it to either plane of Underworld or Paradise. Some angels are happy, others are very stern and justice oriented. A very small few believe themselves to be a better suited pick for leader, and usually end up in a bad position. While frail, Angels do have the means to overpower their “Evil” counterparts, though most choose to only pacify.

Yokai: Yokai are strange beings of spiritual energy that have lived in secrecy throughout the human world. Many choose to house themselves in the Nether World where Grim can allow them to live without fear of monstrous beings trying to get them for their Spiritual Power. They usually are very reclusive, but extremely dangerous when threatened.

Monsters: The Monsters that are classified as once human, some are considered undead, but others are cursed. They come in quite a few varieties, and are all individually their own communities.
-Zombies: Zombies usually hide in plain sight as homeless people who eat animals they find. They do this to hide their hunger, raw meat is what they need, it doesn’t matter what kind, as long as it is raw, or Semi-raw. Zombies aren’t dumb shambling corpses most retain their old memories and personality, some even keeping their old abilities.
-Mummy: Mummies are a more fragile monster that are usually cursed people, unable to accept death and of course, wrapped up. Mummies survive by eating life force, as well as bugs. They are completely themselves after death, memories, personality, and all.
-Werewolf: Humans Cursed to become wolf like creatures during a full moon... or so the legends say. Werewolves are actually a race of human that can curse other humans, and become a wolf like creature at night. They have amazing strength for a human, and most live among humans like normal. However, during a full moon, they are forced to become a Wolf Creature and experience a blood lust.
-Vampire: Blood sucking humans with dark powers. They are cursed into this form, and seem human in the sun, losing their powers when hit by UV rays. It's pretty obvious about them.
-Gilman: Mermaids and Mermen, capable of living on the land, but requiring water to keep alive for longer than a few hours.

Contracted and Arcane:
Contracted are normal humans, able to use their large untapped pools of Spiritual Powers due to the unlocking of their powers. They are teamed up with one other contracted, though sometimes 2, and each become the weapon of the other allowing them to unlock their latent element, Fire, Ice, Water, Lightning, Wood, Metal, Earth, Light, and Dark. When a soul works in tandem with another their soul wavelength will S-ink (soul link) up and create more powerful effects. When it is high enough, the Contracted gain a "Grim Form" which allows the souls to become on par with other reapers.

The Wizards and Witches are humans who have gained power through a demon offering their power, in return the human must do as they ask. When not ordered to do anything, the Wizard or Witch is allowed to do anything they want with the power. By giving a little jolt of Demonic Energy, the Witch or Wizard unlocks a elemental, or primal ability to use as their magic. However, after doing this, the Human is now on Grim's blacklist.

(Now a list of things I had for the book. This list however comes from the Tabletop I was trying to make.)

Classes:
Contracted:
Synchronizer:
Spiritual Spectacle:
Dominance:
Swapper:
Booster:

Witches and Wizards:
Mathmagician:
Animalist:
Summoner:
Elementalist:
Enchanter:

Other:
Swordsman (Human):
Polemen (Human):
Samurai (Human):
Knight (Human):
Brawler (Human):
Gunner (Human):
Fencer (Human):
Ninja (Human):
Archer (Human):
Priest (Human):
Paladin (Human):
Stalker (Zombie):
Shambler (Zombie):
Infector (Zombie):
Feaster (Zombie):
Curse (Mummy):
Wrap (Mummy):
Guard (Mummy):
Plague (Mummy):
Feral (Werewolf):
Moon Touched (Werewolf):
Crescent Claw (Werewolf):
Howling (Werewolf):
Gaze (Vampire):
Shadow (Vampire):
Swarm (Vampire):
Fang (Vampire):
Lagoon (Gill-man):
Ocean (Gill-man):
Mud (Gill-man):
River (Gill-man):
Punisher (Demon):
Purgator (Demon):
Possessor (Demon):
Mauler (Demon):
Judge (Angel):
Legion (Angel):
Cherub (Angel):
Seraph (Angel):
Kappa (Yokai):
Tengu (Yokai):
Kitsune (Yokai):
Tanuki (Yokai):
Bakeneko (Yokai):
Tsuchigumo (Yokai):
Inugami (Yokai):
Oni (Yokai):
Gashadokuro (Yokai):
Yuki-onna (Yokai):
Shinigami (Yokai):


(I know its crazy, but this is just for more choice.)

CS:
Name:
Age:
Appearance:
Gender:
Race:
Element and Weapon or Power:
History: