Vampire Diluc x Reader [REMASTERED]

(this is my remake of my 'old' story of vampire diluc x reader as it could be improved !! this one will probably have more content.)

"Did you know, there are vampires going around Teyvat? Weird, right?"

"Ahaha! That's impossible. Vampires aren't real, stop fooling around!"

...

Where is the proof?