In 1997, Masao is a student with an intense passion for the Frind sect. His life revolves around everything that represents this mysterious group—t-shirts, music, posters, you name it. This devotion drives him to commit an extreme act: assassinating Pierre Ichimonji, the leader of a rival sect, whom Frind wants eliminated.
A student at Ochanomizu University, Masao is also an alumnus of Donkey. He carries out the murder with an accomplice by pushing the target off the school's rooftop. By completing this task for Frind, Masao feels a sense of purification.
In 2014, Masao is incarcerated in the Firefly Sea Prison under the registration number 13, though the reason for his imprisonment remains unknown. Within the institution, he provides "guidance" to other inmates, indicating that he enjoys certain privileges there.










