GETTING TO THE HEART OF THE MYSTERY... Five-year-old Kaya-chan is the strongest psychic who defeats evil spirits by punching them with her fists. Her teacher Chie-sensei has learned that there's something strange about Kaya's mother, and now, someone appears who knows the secret of Kaya-chan's power and of her mother's family... Just how much will Chie-sensei manage to discover?