The Great Cycle

Azraels, or angels of death, send humans to purgatory where they will be cleansed for a hundred years. If a human has done an exceeding amount of goodwill during his/her lifetime, he/she will be born to an angel after her/his 100 years in purgatory. However, if a human has done an exceeding amount of sins during his/her lifetime, he/she will be born to a demon. One’s angelic or demonic bloodbirth depends on the number of goodwill or sins they’ve done.

For example, if a human was a soldier of justice during his/her lifetime, he/she would become either a Domination or a virtue after his/her trials in purgatory; And if a human had always been dependent to lustful activities, he/she will turn into an incubus or succubus.

Theorists also say that this proves why Queen Reverie resembles Adespa and Eule resembles Hope.

Moreover, if angels or demons die on earth, they will no longer be sent to purgatory, but rather live in another human life without any past memories after 200 years. Angels and demons no longer need an Azrael to judge their faith as they will begin straight anew to a new human body. This was what the Ophanim did to Aluna, transferring her soul and being to another child.

When humans, angels and demons are revived to another form, their memories from their past lives are erased to aid them to start anew.

Azraels, on the other hand, do not revive to a human unlike other angels; instead, they are bound to keep being born to an Azrael. However, like the others, their memories from their past lives are also wiped.