On the afternoon of June 1, 2004, 12-year-old Satomi Mitarai was found dead in an empty classroom at Okubo Elementary School in Sasebo, Nagasaki Prefecture. Her killer? A fellow sixth-grade girl, just 11 years old, who had lured Satomi into the room, slit her throat with a box cutter, and calmly returned to class. The motive? A petty online insult. The killer, later dubbed “Girl A” due to her age, had reportedly been upset over comments Satomi made about her weight and personality on an internet