The following auxiliary chapter contains information related to all of the realms introduced till chapter 98 [Ugly? Who?]
Earth/Old World: It was the world in which Jaden lived the life of a photographer and died after witnessing a non-PG act.
Dream Realm: A semi-physical realm which gives birth to nightmares—various creepy beings and horrors. It's the realm where Jaden finds himself after his death.
Waking World/Mortal Realm: The world where humans live while fighting against the nightmares that cross from the dream realm to the waking realm via dreamgates. (It's set in modern times with apocalyptic infrastructure! )
Shadow Realm: Realm of shadows. Has no colour except the shades of black and grey.