A Demon Slayer's fanfic. *WARNING: Gore and sexual assault will be added in the story. Of course I will be reminding you before the chapter start so read at your own risk. If you hate this kind of stuff, kindly leave. (or are you here for this? XD) This story is about a boy name Lucas Nelson in the Kimetsu No Yaiba world. This is a prequel to my Hogwarts fanfic. *I do not own any of the Demon Slayer's character except the OC.*