Summer Wars
After graduating from Tokyo University of Marine Science and Technology, Itō joined Madhouse and switched from being a production assistant to an episode director. He participated in various productions under the pseudonym of Kagurazaka Tokiichi from his time at Madhouse. The pen name is derived from the place where he lived and his grandfather's name. He worked as an assistant director on "Death Note", "The Girl Who Leapt Through Time" and "Summer Wars" before making his directorial debut with "Occult Academy".