Honkai Impact 3rd: I’m Surrounded in My First Playthrough

(How should I put this? The Honkai crisis has already passed, and this is a newly arisen crisis, so this is an original story. I'm a newcomer, so please be kind. Also, this takes place in a World Bubble.)

Death's far shore is accompanied by new life, and the end of all new life is destruction. Ye Chenxi watched his companions die and gave everything in the midst of his anguish. He was reborn in purgatory. This was his final rebirth, his last chance, but he had lost his memories.

Yet the people who appeared by his side one after another showed that they still remembered. This time, they would protect the one who had given everything for the world, and they would overcome those monsters who seemed like gods.