Off the coast of Inujima City lies Lapi Island, home to an isolated tribe of futanari women with unique culture. Aoi visits the island with the Doggy TV crew to film a documentary about the tribe. During the course of filming, she integrates into the local culture and experiences their customs, which include: being naked all the time, servicing the other person's dick as a form of greeting, using herbal medicine to enhance penis size and finally, having the whole village throw a welcoming party (orgy) for the visitors.

Just in case you forgot your lore, Aoi is actually a succubus, so it’s not like she has problems with any of this.
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*