Neko karma akabane x female reader

Y/n and karma were going for a walk and see a strange, small shop and decided to check it out. As they walk in a look around a certain counter catches
Y/n's eye. It was full of glass bottles with colorful liquid inside. The junior high students get spooked by the old lady the runs the little store. They went back to looking around until y/n has to go to the bathroom. She goes of to find the little old lady and ask where the restroom is. Karma goes by the counter with the bottles. Y/n comes back to see........