Hello, I'm a fan of the Robot Girl Series created by P.D. Creations.
As of right now, the first game 機械の少女が夢見た世界 (The World a Robot Girl Dreamed of) and the two parts of the prequel game (機械の少女が紡いだ記憶).
Plot (chronological) of about the game is about a male protagonist (Yule) who was brought to the lab. First seen as a test subject, his semen was extracted by a red haired lady named "Aria" (the one in the pic), a leading scientist who worked for the great eastern power of Hermes. She did this to collect DNA. Later the male was given a shock collar and put on a mission to collect samples around the world.
Aria had a plan to solve the glaring food crisis around the world, by mechanization. A process where a human limb gets replaced by a robot limb. Problem is that males have a rejection mechanism which is detrimental to their life.
With the relationship between Yule and Aria developing, as they became more kind to each other, Aria has become overprotective of Yule after he almost died. This might be the reason why Yule isn't mechanized in the first place.
In the prequel game, Aria and Fistel (Aria's big sister) worked together, but with narrow contact. In the first game that took place after the prequel, they became enemies of each other, but with similar intentions.
Not sure what would happen next to them after the "World a Robot Girl Dreamed of", but let's hope their relationship gets restored.
You can buy the games legally via DLsite:
機械の少女が夢見た世界 (The World A Robot Girl Dreamed of):
https://www.dlsite.com/maniax/work/=/product_id/RJ169029.html
機械の少女が紡いだ記憶 (The Memory A Robot Girl Spinned):
part 1: https://www.dlsite.com/maniax/work/=/product_id/RJ220046.html
part 2: https://www.dlsite.com/maniax/work/=/product_id/RJ263914.html
part 3: https://www.dlsite.com/maniax/announce/=/product_id/RJ290213.html (Yet to be released)
You can contact the game developer via, preferably in Japanese:
Ci-en: https://ci-en.dlsite.com/creator/3847
Twitter: https://twitter.com/PDc_creators_co?ref_src=twsrc%5Etfw%7Ctwcamp%5Eembeddedtimeline%7Ctwterm%5Eprofile%3APDc_creators_co&ref_url=http%3A%2F%2Fwww.pdcreations.co.jp%2FTOP.html
