Demon slayer fanfiction *For this story Rui appears as an older teen* I will try to update around once a week but ultimately it will update when I finish a chapter. Destined to destroy the 12 kisuki, you leave home at an early age to be trained by the mist Hashira. You are sent on a mission to the very mountain where your uncle was brutally murdered. You have visions that become more frequent the closer you get to the mountain, and you continue in fear of what is to come.