Treasure Hunt Mystery Solving in Shiiba Village, One of Japan's Three Hidden Villages: "Challenge from Shiiba Village" Starts April 1st (Wednesday)!

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

The event will be held starting April 1st, 2026 (Wednesday). Special Website: https://bouken-works.co.jp/event/shiiba/

Solve the 4 challenges from Shiiba Village Community Hub Katerie!

This event is a mystery-solving event with "4 courses" centered around the Shiiba Village Community Hub Katerie.

### ① LINE Course "Explore! Great Adventure of the Hidden Village" where anyone nationwide can participate

This course allows participation from anywhere in the country at any time using LINE. By solving the mysteries, you can also watch wonderful videos of Shiiba Village on LINE.

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

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

Once registered, type "NAZO" and send it, then proceed to solve the mysteries presented on LINE.

### ② High-difficulty Course "Grab! The Box of Inheritance" for the first 1,000 participants only

This is a high-difficulty mystery-solving course available only to the first 1,000 participants who clear the "Explore! Great Adventure of the Hidden Village" LINE course mentioned above. Once you know the answer to the mystery, use it as a clue to head to Shiiba Village and 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 via LINE.

### ③ "Open! The Mysterious Treasure Chest" to enjoy the entire Katerie facility

This course involves searching for the key to open a large treasure chest located at the entrance of Shiiba Village Community Hub Katerie.

＜How to Participate＞ Go to Shiiba Village Community Hub 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 course involves searching for the phantom book hidden within the Shiiba Village Library "Bun Bun Bun" inside the Shiiba Village Community Hub Katerie.

＜How to Participate＞ Go to Shiiba Village Community Hub Katerie and obtain a participation kit. Solve the mysteries hidden in Shiiba Village Library "Bun Bun Bun" and ultimately find the phantom book.

Furthermore! ① LINE Course "Explore! Great Adventure of the Hidden Village" ③ Katerie Course "Open! The Mysterious Treasure Chest" ④ Bun Bun Bun Course "Search! The Phantom Book"

Those who clear the above courses will also have a chance to win luxurious prizes made from Shiiba Village's local timber in a lottery!

### Event Outline

Event Period: April 1st, 2026 (Wednesday) ~ ■ Venue: Shiiba Village Community Hub Katerie, Shiiba Village, Miyazaki Prefecture, and other locations ■ Participation Fee: Free ■ Brochure Placement Locations: Shiiba Village Community Hub Katerie (https://katerie.jp/) and others ■ Special Website: https://bouken-works.co.jp/event/shiiba/

Organizer: Shiiba Village Inquiries: Shiiba Village Community Hub Katerie TEL: 0982-67-2177 (9:00 - 17:00, excluding Tuesdays and other closed days)

Cooperation: Shiiba Village Tourism Association

Planning and Production: BOUKEN WORKS Co., Ltd.

【Company Profile】 Operating Company: BOUKEN WORKS Co., Ltd. Location: Kuwano Building 2F, 6-23-4 Jingumae, Shibuya-ku, Tokyo Representative: Yoshio Yoshino Email: [email protected] Phone: 03-6822-3005