Ayakashigami

Ayakashigami is a visual novel set in a contemporary world where Japanese mythological gods and youkai exist. Drawing on Kojiki, Japan’s oldest history book, it follows Shinboku, an androgyne with the reproductive organs of both sexes, who is tasked with surveying a group of mysterious youkai. He spends an eventful summer with the girls in an adventure centered on friendship, with elements of horror and sexual expression.

There are no choices, and the story takes about 3 hours to read. Sexual expression is a bonus element rather than part of the main story, and not all of the main girls are depicted sexually.