Shion Hinata is an 18-year-old, 176 cm tall member of the Seo Research Laboratory, born on October 21. This group specializes in behavioral psychology and narcotics investigations. Shion is characterized by his exceptional intellect as a genius high school student, possessing vast knowledge with few gaps and achieving top results in national examinations. He notably admires Sherlock Holmes. A distinct physical trait is his tendency to fall asleep anywhere and everywhere, regardless of his surroundings. Within the laboratory, he interacts with colleagues Narumi Seo, Ikuto Saotome, Hikaru Kawai, and Isagi Hōshō. The lab's work focuses on memory-related disorders and narcotics cases. Shion's involvement originates from the "Warmth of Memories" narrative, an adaptation of a character-focused event centered on Narumi Seo and the Seo Research Laboratory team.