終わらない夕暮れに消えた君 is a captivating and immersive adventure game developed by SYUPRO-DX Inc. Set on an island where the sunset never ends, the game revolves around a mysterious disappearance. With an estimated playtime of 120 to 180 minutes, this "solitary island mystery ADV" will keep players engaged for hours.

The story begins with an unsolved missing persons case. A rule was established on the island after an incident: "Do not play hide-and-seek during the evening twilight on the festival day, or else you will be taken away by the Evening Calm."

Ten years ago, on the festival day, everyone was playing hide-and-seek. Most of the friends were found easily, except for one who never turned up. Days turned into weeks, and that friend remained missing.

In the present day, a mysterious letter emerges from an unknown sender inside a box that was buried instead of the time capsule they had all created. The letter suggests continuing what was left unfinished ten years ago. As the protagonist, who was the "demon" during the hide-and-seek game, you embark on a journey through the never-ending dusk, holding the letter in your hand.

Get ready for a thrilling and nostalgic adventure as you embark on a 10-year-long game of hide-and-seek in 終わらない夕暮れに消えた君.