Wuthering Waves: I Got Powa by Bringing Alpha Along

In a world on the brink of destruction, Hua gave everything he had as a commander to stop its end. Though he succeeded, he suffered an irreversible death. Yet with the help of a powerful agent, and thanks to that agent's interest in observing him,

he was able to appear in a new world as an amnesiac personality inhabiting someone else's body.

His memories of the five years he had spent with others in his own world were gone. Lost and anguished, he was also troubled by the state of this new world. But to recover his memories, he had no choice but to keep fighting.