My One And Only (Giyuu x Shinobu)

This is work of fan fiction. I changed many events in the story. I DO NOT OWN THE CHARACTERS. Kimetsu No Yaiba belongs to the original author Koyoharu Gotouge. English is not my language. Sorry for the wrong grammar. WARNING: SLIGHT MANGA SPIOLERS (edited) This is my first fanfic. I made some characters on my own. ...