【Mystery Treasure Hunt in Shiiba Village, Miyazaki Prefecture, One of Japan's Three Great Hidden Villages】"Mystery Treasure Hunt: Challenge from Shiiba Village" Starts April 1st (Wed)!

BOUKEN WORKS Inc. (Representative Director: Yoshihiro Yoshino, Shibuya-ku, Tokyo), a mystery-solving event planning company that solves tourism challenges faced by local governments nationwide, has planned and produced the mystery-solving event "Mystery Treasure Hunt: Challenge from Shiiba Village," hosted by Shiiba Village.

The event will start on Wednesday, April 1, 2026. Special website: https://bouken-works.co.jp/event/shiiba/

Unravel the Four Challenges from Shiiba Village Exchange Base Katerie!

This event is a mystery-solving event with "four courses" centered around the Shiiba Village Exchange Base Katerie.

### ① LINE Course for Nationwide Participation: "Explore! Great Adventure of the Hidden Village" This course allows participation from anywhere in the country at any time using LINE. By solving mysteries, you can also watch wonderful videos of Shiiba Village on LINE.

<How to Participate> Register as a friend with the official LINE account of "Challenge from Shiiba Village" from the URL below.

Official LINE of "Challenge from Shiiba Village": https://lin.ee/68omyUo

Once registered, type "Nazo" (mystery) and send it to proceed with solving the mysteries presented on LINE.

### ② High-Difficulty Course for the First 1,000 Participants Only: "Grab! The Box of Inheritance" This is a high-difficulty mystery-solving course available only to the first 1,000 participants who clear the aforementioned LINE Course "Explore! Great Adventure of the Hidden Village." Once you know the answer to the mystery, use it as a clue to head to Shiiba Village, where you can find the "Box of Inheritance" hidden somewhere in the village.

<How to Participate> After clearing the LINE Course "Explore! Great Adventure of the Hidden Village," instructions on how to participate will be sent to you via LINE.

### ③ "Open! The Mysterious Treasure Chest" to Enjoy the Entire Katerie This course involves searching for the key to open a large treasure chest located at the entrance of the Shiiba Village Exchange Base Katerie.

<How to Participate> Go to Shiiba Village Exchange Base Katerie and obtain a participation kit. Solve the mysteries written in the kit, find clues scattered throughout Katerie, and ultimately find the key to the treasure chest.

### ④ "Search! The Phantom Book" to Fully Enjoy the New-Sense Library This is a mystery-solving course set in the new-sense library within the Shiiba Village Exchange Base Katerie, where participants search for a phantom book.