My Childhood Friend Was Stolen by Other Men on a Deserted Island

This is a 3D game in which a wizard’s childhood friend is seduced.
The story has no branching points, and there is only one ending.
Play time: about 30 minutes

One man and three women are stranded on a mysterious deserted island after a yacht wreck. The island is filled with ancient ruins and strange, magic-like powers. Amidst a scarcity of resources, a tale of sexual entanglement, mystical exploration, and tool crafting unfolds. It is an adult adventure where desire and survival intertwine, leading to a final choice: escape or eternal descent.
Gameplay
Exploration & Gathering: During the day, venture deep into the map, avoid beasts / hunt via QTE, collect materials to craft tools (fishing nets, shelters, ship parts).
Resource Management: Allocate food / stamina, upgrade camp, increase survival rate.
Girl Interactions: Raise affection through quests (e.g. hand-weaving, trap-making), trigger side stories. Unlock intimate H scenes (blowjob, titjob, cowgirl, bondage).
Goal: Accumulate resources to build a ship and escape! Balance survival and H, explore the entire map.
Multiple Endings: Full affection harem, solo romance, extreme heavy queen corruption…… High replay value, Adult survival simulation, passion and survival intertwined, conquer the island and their hearts!

The protagonist and his childhood friend, Nanami Mitsuki, get caught in a storm during their trip and are stranded on a deserted island.
As they live with the goal of simply surviving, their sexual urges gradually build up…
To relieve those urges… they start helping each other masturbate!?
Will they be able to build a boat and escape the island without being consumed by their desires…!?

It’s a “Deserted Island Survival ‘Harem’ SLG” featuring an ordinary male office worker who ends up stranded on an uninhabited island together with three women from the same company.
In the midst of beautiful nature, search for food, gather driftwood, craft tools, and survive by cooperating with the heroines.
The island’s liberating atmosphere and the ever-present fear of death gradually drive their sanity to the brink. Once the women’s sexual urges are ignited, their desires grow uncontrollably and are directed toward the island’s only man.
There are no laws or prying eyes to suppress lust on a deserted island.
You play as the protagonist, Takumi Shimamori, and as the norms of civilized society crumble, build your very own harem.

The protagonist who aims to be an adventurer arrives at the
"Adventurer Certification Test Center" with his peek-a-bangs childhood friend Momo.
To become an adventurer, defeat monsters and gain points through prostitution.