What A PUNderful Time (Sans x reader)

I have become obsessed with the wonderious game known as Undertale and, after seeing some here (but not nearly enough), I decided to make an x reader one shot book.
YOU THE LOYAL READER WILL GET TO SUGGEST THE CHARACTER, and possibly small prompts for the chapter, I WRITE ABOUT!
There are only two rules:
1) No lemons, I don't write those, I am a Cinnamon Bun(ny) and I avoid writing those
2) I will not write Flowey one shots, he is an evil fower. HOWEVER this does not mean I will not write an Asriel one shot.

What I write is up to YOU, dear reader, just say the name and I'll try to make it happen.

(The cover, Undertale, and you do not belong to me!)