Kingdom Spirit Blade Hearts & Bible Blade Supreme Trinity DxD Maximum Revolutionary Superior Grand Master Genesis Storm: Awakening of The True Successors & The Rising Legend of The Strongest & Most Powerful Warriors In All of Existence is a fan fictional mega multi-crossover series. Rias Gremory is the heir and successor of The Devil Queen Lilith. Rias has vast amounts of power. Rias is an ultimate class devil. Rias is said to surpass her predecessor along with Grayfia, Katerea, & Serafall.