Myriad Realms: Divine Domain

In this world, everyone has a world. At birth, a Myriad Realm Seed condenses within each person's body. The seed takes root and sprouts in the sea of consciousness, growing into a complete world. Cultivation realms, technological realms, magical realms, insect realms, martial arts realms, undead realms... The type of Myriad Realm Seed is innate, determining the direction of your world. — Description from novelcodex.org