After Life: When their quirk manifested, they instantly died, creating multiple different afterlives. This occurred across all time, meaning that even before the quirk existed, the afterlives it created did.
Some of the afterlives created resembled or even incorporated elements from various religious and fictional afterlives. They even included places that weren't traditionally associated with them.
Sentient creatures, including artificial life from the Arena, have souls and can also go to the different afterlives.
One afterlife is modeled after the abyss, created to serve as a purgatory for souls that have been destroyed, rather than just when their bodies die.
One afterlife is modeled after the most common depiction of heaven in the Christian religion. There, "angels" hunt down any souls that have arrived, attempting to destroy them. If a soul manages to defeat an angel, it has the option to be reincarnated without any memories or to be sent to one of the permanent afterlives with all its memories intact.
There are ones modeled after the circles of hell in Dante's Inferno. If the souls can pass the trials, they will be sent to heaven. If they fail, their soul will be destroyed.
One is just a blank void of space with no light or anything at all. This serves as a punishment for people deemed unable to change.
Another is a bottomless pit into which they will endlessly fall. This serves as a punishment for people deemed unable to change.
Afterlives for individuals who passed tests for redemption or were deemed to be good consist of an afterlife that resembles Earth, but infinite.
Due to shinigami from bleach coming from the arena quirk it has created another after life option the soul socity. and souls before they can go to one of the after lifes have to be escorted by a soul reaper. it also introduced wecomudo(def spelt wrong) and hell. along with hollows and spiritual energy being introduced into the world.