Kiyui was a 9 year old, she went out to get some food from her friend's house, which is a few miles away from Kiyui's house, When she was abt to leave, her friend's mother said "It's getting dangerous out there, why not stay one night here? I'm sure your parents wont mind?" despite having strict parents, she said yes. the next morning, when she was leaving she ran to her house, and there was bl00d, every-where... she was just walking in when she could sense a demon behind her, she slowly turned around, a tall, demon, with red hair and a green haori was standing, RIGHT behind Kiyui, Kiyui says "s-so ur the one who k1ll3d my family, right?" she said, shivering in fear. the demon replies with "huh. so you could sense me behind ya? ur going to be a strong demon slayer one day... or why not become a demon? or- and why am i ignoring your question!? Yes, I did k1ll/eat your family!" it smiles.