Its a bit disappointing to see ELF mentioned only as a screenshot source, and C's Ware never mentioned, despite these two being the two undeniable kings of eroge in the 90s and early 00s.
YU-NO isn't mentioned at all, despite it being perhaps the single most influential eroge of its time. Even to this day I haven't played a game like it. (Though to be honest, my personal thoughts on YU-NO is that it would have been a better game without the erotic content, but I digress).
EVE Burst Error isn't mentioned either, neither is XENON Mugen no Shitai, DESIRE, not even Amy's Fantasies (known in Japan at the time as "the unmarketable game") is mentioned. They spend more than half the article talking about the history of erotic media content in historical Japan.
Seems like this is an article that the writer just wanted an excuse to talk about KOEI and Enix developers early careers.
This was followed by Orandazuma wa Denki Unagi no Yume o Miru ka? (Do Dutch Wives Dream of Electric Eels?, Dec. 1984, PC-8801). Inspired by Philip K. Dick’s Do Androids Dream of Electric Sheep? (1968), players take on the role of a private investigator who has to track down a sex doll (called Dutch wives in Japan) that has become sentient and is murdering its lovers. The player tracks down the rogue doll by seducing all the women in Tokyo’s red-light district.
The concept sounds awesome. The porno parody "Blade Runner" needed.
I think it was also the plotline of an episode of the AD POLICE anime OVA. Or maybe it was Parasite Dolls, which is part of the same series. I can't remember fully.
EDIT: After looking it up, it was either EP1/EP2 of AD POLICE FILES, or EP1 of Parasite Dolls that had a plotline like this. However, prostitutes and murder have been in crime and investigation stories since the dawn of crime, probably because the correlation of the two crimes is very high in real life. Most famous example being Jack the Ripper's cases.