
Quick answer — Takeharu Sakurai worked on Detective Conan: Black Iron Submarine (Script), Detective Conan: The Darkest Nightmare (Script), Detective Conan: Sunflowers of Inferno (Script) and 1 more anime.
Takeharu Sakurai worked on Detective Conan: Black Iron Submarine (Script), Detective Conan: The Darkest Nightmare (Script), Detective Conan: Sunflowers of Inferno (Script), Detective Conan: Private Eye in the Distant Sea (Screenplay).