It had been a year since Takahashi Akari had seen her family. Now she was back and at a glance, everything is more than perfect. But when she becomes her own enemy and her worst nightmares turn into reality, what will she do? Will she be able to survive with these foreign feelings and save humankind? Or will she fall prey to the demon inside of her and become the one thing she swore to protect her loved ones from? DISCLAIMER: Demon Slayer is owned by Koyoharu Gotouge. Only two characters and the plot is owned by me. This is a various x OC WARNING: This story contains manga spoilers and NSFW content.