Wuthering Waves: From Nightwatch Squad Leader to Godhood

(Mostly original worldbuilding for the period two years earlier; the story proper begins two years later.) There is a System, but it barely features.

The world is dark, but you, Feng, are my light. I am unworthy, but my name is Su Qingfeng.

I was just someone who wanted to lie flat, but I accidentally transmigrated to Wuthering Waves. Later, entrusted by someone, I put his ideals into practice and inherited everything he had, only to nearly lose myself in the process.

A gift-pack System rewards me for killing monsters. From being completely unknown at first, I somehow became famous throughout Solaris. Since then, people have given me the titles of Sword Immortal, Sword Sage, Holy Immortal, and Sword God.

Lord of the Threnodians? Heh... Let's see if you can withstand my “One Sword Opens Heaven's Gate.” Oh? What? You can't be killed? Interesting! Banner, come!

Jiao: Within my Domain of Temporal Order, I can freeze you in place. No matter what attack you unleash, it will take a hundred years to reach me. Give up.

Qingfeng: Oh? Is that so? I'll admit, that's a bit troublesome. But it's nothing in the face of my laws of space. Temporal order is just temporal order, not a law. If I pull you into the void, won't you burst apart?

As soon as the words fell, divine halos appeared behind Qingfeng in an instant, slowly turning as a terrifying pressure descended.