Emiri Momota is a simple cleaning lady at a scientific laboratory, her days are not really filled with excitement but she does her job more than well. She’s at the laboratory every night, cleaning behind the docs and scientists who usually don’t make a lot of mess. Today it’s everything as usual, she’s got earphones, listening to music, and cleaning one of the laboratories. However, one of the chairs is extremely slimy. There’s a trail running down it, which she tries to wipe off but it’s sticking to the cloth.