This individual possesses exceptional abilities that allow them to assume control over another person's body while simultaneously gaining access to their powers or memories. This process renders the possessed person unconscious. Originally, this person was a remnant of an enigmatic organization known as "F." Their objective was to join Kiryu's group, which promised admission in exchange for acquiring each member of the literature club's unique abilities. They commenced with Koudou by employing their "Great Robber" talents to obtain their powers. However, they soon discovered that they had bitten off more than they could chew when confronted with Ando's formidable "Dark and Dark of the End." Regrettably, Kiryu ultimately rejected their application, suspecting that Sagami, who meddled in the process, was responsible for the deception. To add insult to injury, Kiryu also utilized his Pinpoint Abyss ability to transport them back to a prior location without any recollection of their past actions or accomplishments.