Female Protagonist, but with realistic body proportions without being too loli. I like joining their quest, ideally meeting other females and lewd encounters. An optional purity route (not necessarily virgin) is nice to struggle against corruption aspects in the adventure.
My first introduction to this genre was a simple Brothel Manager on Newgrounds back in the day. You pick a starting anime character and work up your finances. Looking after your girls' health, paying for training, wardrobe upgrades, facility upgrades, etc. At the end of every turn, there would...
Any one play those coop maze games on Starcraft where you and a team had to pass puzzles and challenges to slowly unlock a picture on the map? If one team member messes up, the game is lost and the image is locked?
I remember those days only so vaguely. There was a game where you had to get a sleeping girl to organize without waking her up and a series of games where you explore an island town and trade items to get girl's photos.
Corruption of Champions then discovered the customization of Honey Select and Artificial Academy. After a long break, rediscovered the genre through Steam with Kindred Spirits on the Roof, Milky's Quest and Detective Girl in Steam City