Limbo

Limbo is the place of the in-between, where you go when you die. It has the appearance of a noir office, only colors being black, white, and grey. Once you die and wake up in Limbo, you'll be a ghost. Ghosts are able to float and phase through most things, but the walls in Limbo aren't able to be phased through. Each entity that enters Limbo wakes up sitting in a waiting room with a paper that has a number on it. A screen will then show a number that belongs to those in the waiting room every 5 mins. Once your number shows up, it will be your turn to enter the main office. When you walk in, you will be faced with a receptionist. They're presumably female due to their feminine body structure and voice, but they themselves are blurred out. You're instructed to sit down in front of her, and the door behind you inexplicably becomes a double door. She reaches over her desk and sticks her hand into your chest, pulling out a scroll from your body, and proceeds to reads off every good deed you have done in your life, then the bad. If your good deeds outweigh your bad deeds, you get to go to Heaven, or into the forest. The forest is black and white and outside the double doors, whereas Heaven is accessible by an elevator to the right, with golden doors that fly upwards into Heaven. If your bad deeds outweigh the good, then you can only go to Hell, which is a red-doored elevator that crashes down once you enter. If neither deeds outweigh the other, you may choose from all the available options.

However, if you die with unfinished matters or with extreme willpower, you will stay in the Overworld as a rouge ghost and be assigned to a Scribe.

The Forest & Scribes
If you choose to go out into the forest, you are reincarnated as a Scribe. You will retain your appearance but your race will be different. As a scribe, your skin turns grey and your hair black, and you are in an attire that's similar to an office worker. You're free to explore the forest until you are called in by the receptionist. As a Scribe, you are obligated to do every order she gives you, those orders being a lost soul that didn't enter Limbo upon death. Once a Scribe grips onto a rogue ghost, it's an unbreakable grip. The Scribes are truly neutral, neither good or bad, simply just doing their job. The receptionist places a limit of 2 Scribes on each rouge ghost. In turn, it's very possible to hide from a Scribe, especially with the protection of a Kitsune or a Soul aether user. Scribes typically stop pursuit after 2 days of searching or of you fleeing. If you manage to not get taken during those 2 days, you get a grace period of a month before 2 more Scribes come after you. The greatest route for a rouge ghost is to enter the second level of Hell and work for a hollow body. 

Entering Hell
Outdated info, waiting on Dimitri. Depending on the severity of your bad deeds, you will be sent to a certain level of Hell.

Tier 1
Your bad deeds weren't severe, so in turn, you don't deserve severe punishment. You will be placed in the first level, Necropolis.

Tier 2
Your deeds are more serious. You are sent to the second level, Styx.

Tier 3
Your deeds are among the worst. You will be subject to torture in the third level, Tartarus.

Tier 4
You were the worst you could be. You are quite literally, thrown into the Abyss, the worst possible placement in Hell.