Castle Orgies (色暦大奥秘話, Irogoyomi ōoku hiwa) aka Eros Schedule Book: Concubine Secrets and Sensual History: Shogun's Harem Secret Story is a 1971 Japanese film in Nikkatsu's Roman porno series, directed by and starring Setsuko Ogawa and Yoichi Nishikawa. Part of Nikkatsu's first Roman porno double-bill release, it was the first film in the 9-film Eros Schedule Book series, and actress Setsuko Ogawa's debut film.