The Buddha Realm is provided with the Beginningless Nine Realms

‘Striking down the Causes and Effects of the Ten Realms of the Previous [Sutras] and the Manifestation Doctrine, it preaches and reveals the Causes and Effects of the Ten Realms of the Doctrine of the Original. This is the very doctrine (homon) of the Original Cause and the Original Effect. The Nine Realms are possessed in the Beginningless Buddha Realm and the Buddha Realm is provided with the Beginningless Nine Realms and it should be the True Mutual Possession of the Ten Realms (jikkai gogu), the Hundred Realms and Thousand Thusnesses (hyakkai sennyo) and One Thought is Three Thousand Realms (ichinen sanzen).” -- Nichiren