A modern day hentai world

Deciding that they wanted to begin with something simpler, the doki's began work on expanding the school and suburb into a fully fledged city full of NPCs. As they were planning it out Monika realized that they could reach out from their games folders and into that of other games on the player's computer. They find that their player was quite the pervert with various hentai games on their computer. They shudder at the thought of how the player originally planned to mod their own game. But this discovery would prove useful as they import the file's for their cities, landscapes and NPCs and integrate it into their own game. Soon they had made themselves an entire world to explore filled with people they could romance and seduce.

Just looking out their club window they could see many new faces; men, women and fellow students, all of whom were attractive and 18 years old at minimum just like them. But all of them are blissfully unaware of their false reality, that was an honor the Doki's kept for themselves along with the ability to modify the world around them how they see fit.