(Y/N) who is Uppermoon Six along with her brother, Gyutaro. She was busy working in the red light district but she was being followed by demon slayers who are perverts. When she went back to her room, the demon slayers went in through her window and asked her if there was anything suspicious activity happening. Suddenly, a portal opened underneath them and they fell in and they ended up in a new world. As she was trying to find a way to go back home, there are skeletons that are falling in love with her and became yanderes.