For actual examples, you can see the first sentences of different chapters in the same story.
https://www.scribblehub.com/read/1700060-i-became-part-of-the-dragons-hoard/chapter/1819018/
https://www.scribblehub.com/read/1700060-i-became-part-of-the-dragons-hoard/chapter/1945140/
I personally dislike the saying whose POV it is before the chapter. I always just lead with the character that has the POV in the first paragraph.
Something like this:
Hikari opened a thread and saw a comment asking about POVs...
And if the next chapter was your POV, I would start it the...
You need to put a space after punctuation. Sometimes you do, and other times you don't. It makes the whole thing look odd. These errors even persist into your synopsis.
It's alright. People think dark is something that it's not most of the time. People just dying left and right and other stuff like this is not what makes a good dark fantasy. Dark Fantasy should explore dark themes while not just being cringe edgy stuff.