Here is the description of the game, from Aksys Games:
The story takes place on a miniature garden in the sky, the renowned and prosperous utopia, Itehari. Our protagonist is Hinagiku, a noble lady from a distinguished family who longs for the world beyond the floating town. One day, Hinagiku, having just turned 18 years old, encounters an amnesiac man named Yashiro. Their fortuitous meeting becomes the catalyst that drags Hinagiku into a series of events involving the secrets and various truths hidden beneath the surface of Itehari…for this garden in the sky is a false utopia.
The below video is the original Western announcement trailer for Utakata no Uchronia.
Illusion of Itehari is developed by LicoBiTS, a collaboration between Broccoli and TIS Creation to make games for the female audience. It will be released in the West for Nintendo Switch in “fall” 2025 (Q4 2025).