Jin Haganeya (鋼屋 ジン Haganeya Jin) is a Japanese scriptwriter. As the writer, Hanegaya is known best for his work on the Cthulu Mythos-infused visual novel, Demonbane. He is one of the writers that served as Gen Urobuchi's assistant in writing scripts for Kamen Rider Gaim, except for the episode 47, the final episode of the said series, which is penned by himself with Urobuchi supervising the episode script.