Bakko

The protagonist is high school girl Kiriko Jinno, who has no friends, no guts, is always messing up, and has been aware of being an "In-C" (introvert/gloomy type) since she was little. After finishing the cleaning duty she was always saddled with, she is walking home alone when she stops by a shrine and wishes for the extermination of the "Yo-C" (extrovert/outgoing type) and a peaceful life. Suddenly, a yōkai demon appears and nearly kills her... Through her encounter with the yōkai, Kiriko learns a secret hidden within herself.