Warrior Deity Spirit Blade DxD Mega Intergalactic & Supernatural Genesis Storm: Rise of The New Generation of The Strongest & Most Powerful Beings in Existence-- Battle Busters / Heirs & Successors of The Ultimate Beings in Existence is a fan fictional story based on High School Evangelion DxD.
This is a Mega Crossover featuring Kingdom Hearts, Medaka Box, Neo Sailor Moon, Maburaho!, Omamori Himari, Yu-Gi-Oh!, Transformers, and more.
Shinji Ikari is the failsafe created by God to restore the world's balance & keep Heaven safe. He is also God's heir & successor.
Rias Gremory is the failsafe to Catherine Rose Hinsoma to help keep the Underworld safe. She is Catherine & Lilith's heir and successor.
Medaka Kurokami is one of the original leaders of Grigori. She also one of The Six True Fallen Angels & The First Abnormal created by The Biblical God.