download 野外学習-special4 if not download
http://www.anime-sharing.com/forum/hentai-games-38/japanese-%5B151218%5D%5Bコンプリーツ%5D-野外学習-special4-450728/
copy 野外学習.exe - paste exe in installed folder and rename exe (MMC and ZMC). This method not working in ママクラブ 参観.
sorry my very bad english.