Fifth and last of the numbered installments of the Kansen series.
This is the second game of the series that I have played so, I come to it with pretty much no prior knowledge of how the story was before this.
But, honestly, you don't need to know the previous story to play this, the story picks up from a natural point and build from there.
So, in broad strokes, this "aphrodisiac" virus spreads and the mc and his friends get tangled up while trying to survive. It is like a horror movie without getting gruesome.
The contents are what you can expect from a "infected" horde of horny people. There are choices you can make that make it so you can overcome some of the situations the characters are put in.
The art is very pretty and if you are a fan of the artsyle, this game definitely gets you what you want.