Planned Release Date: Sep 15, 2025

About This Game

Build a Sanctuary for Idols Across Fantasy Worlds!

A City-Building × Idol Simulation Game

■■ Game Overview ■■

● Develop the Idol Fanctuary!

The adventure begins in a blank, open field beneath the World Tree. From roads to buildings, you’ll place a wide variety of structures to gather resources and grow your city into a thriving sanctuary.

As the Fanctuary develops, you’ll attract more fans, earn Likes, and unlock new concerts. You can even build stages where your idols will perform in front of cheering crowds!

● Advance the Story Through Idol Activities!

From rhythm-game-style concerts to touring across fantasy realms, idol activities are the key to your game progress. Completing concerts and building stages will unlock new recipes, new stories, and new live performances.

Your idols will grow stronger and more confident as the Fanctuary flourishes!

● A Wild Yet Heartfelt Story Unfolds!

Progress through successful concerts, construction projects, and city development to unlock new chapters in the story.

Follow Akari Sunohara—an ordinary girl with a love for idols—as she discovers her true calling. Dive deeper into each of the five main heroines in dedicated Character Stories, and experience each idol’s unique charm!

■■ Story ■■

You were just enjoying a concert by the legendary top idol Ruri Tsukuyomi… and then you woke up in a strange, unfamiliar world.

Rescued by Akari Sunohara, a cheerful girl with a deep love for idols, and guided by Moku-san, a flower spirit, you learn the shocking truth: you and Akari have fallen into a mysterious dimension called the Void, and there's no way home—at least, not yet.

Your only hope lies in Akari’s hidden potential as an idol. In this world, idols are more than performers—they’re beacons of hope and the key to restoring lost connections between realms. But Akari can’t do it alone. She needs your support.

To return home together, you’ll need to build a city in the Void—an idol sanctuary known as Fanctuary that will light the way!

■ Characters ■

● Protagonist (You)

You’re the one who was transported to the Void alongside Akari. As the central figure in this world, your role is to support Akari and the other idols on their journey.

● Akari Sunohara

An ordinary girl with an extraordinary love for idols. She possesses the innate potential to become one herself, and must step into the spotlight to find a way home.

At first, she struggles with doubt and frustration, but grows through her encounters with veteran idols and her fans in the fantasy worlds.

● Ruri Tsukuyomi

The Ultimate Idol, reigning at the top with an overwhelming presence and voice. Her legacy echoes throughout the various fantasy worlds Akari explores.

● Lynalelle Singulant

The idol of Seven Falls, a fantasy-themed world. She’s a king, an idol, and a passionate idol superfan all in one!

● Haru

The idol of Discordia, a sci-fi-themed world. She’s a trusted senior to Akari, but seems to be hiding some complicated circumstances.

● Kagura

The idol of Karan Ashihara, a world with a traditional Japanese aesthetic. As the wild and fearsome Behemoth of Befoulment, she stands in Akari’s path as a powerful rival.

Mature Content Description

The developers describe the content like this:

This game contains a small number of CGs, including nudity of some characters.
includes a few illustrations with revealing outfits.