HIS HOME is a split off Pocket Dimension of The Primordialverse, somehow made of a mix of Primordium Alpha and Primordium Omega, a practically impossible substance. Only The Primordial, THE 8 DIVINE GODS and others which The Primordial allows can enter HIS HOME.
Most of HIS HOME is empty and barren, but in its centre holds a flat, floating island. The Primordial only leaves this realm if some threat to him or his dimension arises.