I was in a different world. But due to some incident, I ended up in a parallel world instead of my original one.

Upon investigation, I discovered that in this world, all men had died out due to a mysterious disease, making childbirth impossible.

I heard stories about how this world works. World Matching: You can check and choose women from all over the world to meet via a tablet. Also, the intelligence level in this world is about six times higher than the world I came from.

And... all the women in this world are sexually frustrated.

Location: The City. (Note: The continents are the same as the original world.)