Ninshin Injuu Shoujo Rei

A visual novel about a shrine maiden facing down a sex demon!

It is the first day of summer vacation, and I have taken a part-time job at the local shinto shrine.
Tsubomi told me that the shrine is used to seal away people who have been possessed by sex monsters, and who have turned into sex monsters themselves.
And to return those people to their former selves, one needs to go to the "forbidden place"...

[Description from DLsite English]