Game update on 12/03/2020. Created by MoonGlow. Available for download in en.
The girl looks into a crystal orb (used like a camera) and tries to hold a smile while people view her through "the girl's room" (like a modern chatroom). Why did the girl end up having to do this? Her name is "Kororu". She is the daughter of a famous rich family in this city, and she is shy but a hard worker.
Spoiler: MOREHowever, the recent ball had changed everything. She found out that her father had been harboring a massive debt, and the family began to be taken away one by one... Kororu was taken to a place where she was forced to work to pay off the debt. Though she was shy at first, the owner assisted in training her body to enjoy sexual sensations, and as she continued to work, she became corrupted by the sweet physical pleasures... That is what being a mushikarishi is all about.