Release date: 2022/12/23
https://www.getchu.com/soft.phtml?id=1203285
https://www.dlsite.com/pro/work/=/product_id/VJ015789.html
https://dlsoft.dmm.co.jp/detail/bishop_0060/

This is the Immoral Edition, which is an updated version of the original Mesu Kyoushi 3 ~Inetsu no Gakusha~ (牝教師3 ～淫悦の学舎～), released in 2013/04/26. This contains the following upgrades from the original version:
- Compatibility with newer Windows operating systems (XP/Vista/7/8/8.1/10/11)
- Anus and pubic hair are more detailed, with the option to turn off pubic hair
- Resolution increased from 1024x576 to 1366x768 (133% increase)
- Added an option for a countdown (how many clicks remaining) until ejaculation in the current scene
- Improvements to the Collection Room
-- Inclusion of background voices not present in the original version
-- Improvements to character CG and message window display settings

Gallery notes:
- The removal of pubic hair only affects only 5 out of the 6 characters, as one character (Mizusawa Chisato) does not have pubic hair visible by default. This version does not give her pubic hair.
- The default settings have pubic hair and cut-in images enabled.
- The filenames are mostly taken from the filenames of the extracted files.
- - Images with pubic hair option enabled is denoted with an 'a' near the end of the filename, and 'b' is used if the image is different with pubic hair disabled.
- - - This means that 'b' images are omitted if it is exactly the same as 'a' images.
- - Images with cut-in images enabled is denoted with a 'c' near the end of the filename, and 'd' is used if cut-in images are different, if applicable.
- - - Images with cut-in images enabled/disabled of a event CG count may be identical to other images of a different event CG count. They are not omitted, due to being of belonging to different CG counts.
- - 'Enjoy' event CG are grouped together in the same folder with the normal event CG.
- - Overlays that slide along the screen during an ejaculation scene are separated, and is grouped with the corresponding ejaculation CG.
- Character CG galleries include both upper body and full body versions, with pubic hair options enabled/disabled ('a'/'b'), if applicable.

Contents (10 separate galleries):
(Multi-Page Viewer compatitble: If enabled, click (MPV) to jump to the corresponding image)

Gallery 1 (Event CG 1/3): /g/2649220/c6ec5431ab/
- Cover image: (P0001) / (MPV)
- Title screen: (P0002) / (MPV)
- Event: Prologue (ev00): (P0003) / (MPV)
- Event: Himekawa Yurika (姫川 由梨香) (ev01): (P0078) / (MPV)
- Event: Yoshii Touko (吉井 灯子) (ev02): (P0569) / (MPV)

Gallery 2 (Event CG 2/3): /g/2649221/be012c3c96/
- Event: Mizusawa Chisato (水沢 千里) (ev03): (P0001) / (MPV)
- Event: Saeki Riana (佐伯 里亜奈) (ev04): (P0355) / (MPV)

Gallery 3 (Event CG 3/3): /g/2649222/4f95a70eca/
- Event: Takashina Kurumi (高科 くるみ) (ev05): (P0001) / (MPV)
- Event: Komatsuzaki Shino (小松崎 志乃) (ev06): (P0531) / (MPV)
- Event: Harem (ev07): (P0984) / (MPV)

Gallery 4 (Background CG): /g/2649223/98ad90566d/
- Background images: (P0001) / (MPV)

Gallery 5 (Character CG 1/6): /g/2649224/b2209541e1/
- Character CG: Himekawa Yurika (姫川 由梨香) (bu01): (P0001) / (MPV)

Gallery 6 (Character CG 2/6): /g/2649225/9a40c48875/
- Character CG: Yoshii Touko (吉井 灯子) (bu02): (P0001) / (MPV)

Gallery 7 (Character CG 3/6): (This gallery)
- Character CG: Mizusawa Chisato (水沢 千里) (bu03): (P0001) / (MPV)

Gallery 8 (Character CG 4/6): /g/2649227/ccedf70574/
- Character CG: Saeki Riana (佐伯 里亜奈) (bu04): (P0001) / (MPV)

Gallery 9 (Character CG 5/6): /g/2649229/e3e5ba2501/
- Character CG: Takashina Kurumi (高科 くるみ) (bu05): (P0001) / (MPV)

Gallery 10 (Character CG 6/6): /g/2649230/94243469c0/
- Character CG: Komatsuzaki Shino (小松崎 志乃) (bu06): (P0001) / (MPV)