Rip directly from the game.

Comparison with https://e-hentai.org/g/308390/c5cdd5bb0b/ :
-add missing cg
-files are in the .png format as they were in the game
-add sprites, background images and thumbnails

Getchu - http://www.getchu.com/soft.phtml?id=677987

Erogamescape - http://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=11681#ad

VNDB - https://vndb.org/v8389

DL site - http://www.dlsite.com/maniax/work/=/product_id/RJ043524/

DMM - http://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_019534/

Game OHP - http://www.circle-mercure.jp/gamelist/01_saiminsofia/index.html

Artist - Bara Ichigo (ばらいちご) (バライチゴ)

Base +29, Becksy +1

One funny thing is that even though all these pictures are extracted from the game, some will never appear during a normal play, probably because the development was stopped before all intended features were implemented.
Picture 119 is the ultimate paradox, it does appear like that as a thumbnail in CG gallery, but the only corresponding CG are 16~21, and she's not naked in there.

Base +7, C h a n +9, Lolification +7, Becksy +1

(同人ゲームCG) [081015] [サークル メルキュール] 催眠牝奴隷騎士ソフィア ～レズ騎士団長、催眠調教に堕ちる～

Base +7