He tells Ranpo that he possesses a supernatural "Ability" called Super Deduction .
Ranpo quickly proves his genius by solving the murder case Fukuzawa was investigating in a matter of seconds. He identifies the killer not through supernatural powers, but through pure, terrifyingly sharp observation. However, Ranpo is distressed; he doesn't realize he is a genius. He believes the world is "scary" because everyone else seems to be playing a game he doesn't understand, or deliberately acting stupid. The Birth of a Partnership Bungou Stray Dogs 4 Episodio 1
He gives Ranpo a pair of plain glasses, claiming they are a "control device" to help him focus his power. He tells Ranpo that he possesses a supernatural