Genshin Impact: The Sun Prince

I know that the name of the novel may be a little cliché, but I just decided to do it, anyway the synopsis:

This is a Genshin Impact fanfic and the story is about how he is Chong Yuns older brother and looks after him, this will have some Slice of Life elements, but don't worry there will be action. (there will also be some stuff about the MC I will not say, so you will have to read a little to know)

edit: I figured out that my first like 3 or 4 chapters are literal hot garbage because I didn't know what I wanted at the time, so please keep on reading, also I will rewrite them at some point.