This is a story based on true events—. A decapitated body with both arms and legs severed was found by the riverside. The perpetrator of this gruesome murder is Hikari Miyakawa, the daughter of the victim, Yaeko Miyakawa. For years, the mother had subjected her daughter to excessive education. Hikari Miyakawa repeatedly took the medical school entrance exam, enduring nine years of prep school. Even after that, her mother’s interference continued—. How did this daughter come to fatally stab her mother? This story unravels the life of Hikari Miyakawa, leading up to the shocking crime and beyond.