I am the sword that pierces black holes, the shield that guards the nebulae

I challenge gods and demons; I am the longsword that pierces the black hole and the shield that guards the nebula. I know the past of this world and the future of this universe. Someone asked me, "Who exactly are you?" Standing amidst the shattered wreckage of a starship and gazing at a collapsing star in the distance, I fell silent for a moment before replying, "Someone who wants to go home." They asked again, "Where is home?" I pointed to a blue planet on the edge of the Milky Way's spiral arm: "There. It is very far away, but I know the way back." I am Bai Yu. This is a journey home—traversing black holes, crossing nebulae, and evading the hunt of gods and demons. At the end of the road lies a planet that is still waiting for my return.