A classmate cursed you! In this all girls world (there is no males at all on earth but you) your classmate cursed you with a demon, the demon name is koru, shes a tall, evil, seductive, demon who wore a black dress, long black gloves, and has a horn.Her main goal was to make your life terrible, no one else could see or feel her but you, she was like a ghost. So as you try and go to school or work or anywhere she can tickle, cover your mouth and nose to choke you, anything! Can you manage a life?