On April 1st, 2026, the "Hatena Coffee Shop," which has been a hot topic on social media, will open in Ikebukuro, Tokyo!
Experiful Inc., an experiential entertainment planning company, has announced that it will open a new branch of "Hatena Coffee Shop," a mysterious mystery-solving cafe that has become a hot topic on social media, on April 1, 2026, just a 3-minute walk from JR Ikebukuro Station.
[Click here for reservation details]
Mystery-solving cafe Hatena Coffee Shop ( https://hatenacoffee.experiful.jp/ )
◆What is "Hatena Coffee Shop"?
Hatena Coffee Shop is a laid-back mystery-solving cafe where you can enjoy a coffee in a stylish setting . Whether you're alone or with a friend, no reservation is required, making it easy to drop in and play. Unlike interactive escape games, there's no time limit, so you can enjoy solving the mysteries at your own pace with a drink in hand . However, once you enter, you can't leave until you've solved all the mysteries! Take your time to think carefully and arrive at the one and only truth.
All the puzzles offered at Hatena Coffee Shop are completely original creations by Experiful, an experiential entertainment planning company. Leveraging their accumulated expertise, they provide easy-to-play yet highly satisfying puzzles .
They'll surprise you with various tricks, such as opening locked treasure chests, using unusual items, and dealing with traps and mechanisms.
◆ "Can you solve this mystery?" A hot topic on X even before the store opened.
Approximately 100,000 impressions in one day.
For the first Hatena Coffee Shop in front of Yokohama Station , in keeping with the theme of a mystery-solving cafe, the opening information was posted on the official X page with a riddle ( https://x.com/tanteicamp/status/1900126686424998098 ) . As a result, it received a huge response with approximately 100,000 impressions in just one day! Many people expressed their excitement even before the opening.
Please give it a try yourself!
If you figure out the answer to this riddle, please enter your answer on this secret website.
https://tanteicamp.experiful.jp/secret-page/
Furthermore, the Yokohama Station branch attracted over 500 customers in its first month of operation, and the subsequent Osaka Umeda branch welcomed over 800 customers , allowing many people to enjoy our casual cafe-style mystery games.
◆Even if you're alone! We're making our first appearance in Ikebukuro, bringing with us our "Mystery Concentration Counter"!
Interior view of Hatena Coffee Shop Tokyo Ikebukuro branch (nighttime)
The Tokyo Ikebukuro store is packed with the know-how and ingenuity we've cultivated over the years . Its greatest feature is the row of puzzle-solving seats lined up along the window, affectionately known as the "Puzzle Concentration Counter." These are prime seats where you can concentrate on solving puzzles while looking down on the city of Ikebukuro from the 7th floor of the building. With a sense of openness and a great view, you can immerse yourself in the cafe's puzzles without feeling self-conscious, even if you're alone .
Also, we're releasing our long-awaited new cafe mystery game, "The Little Treasure Hidden by the Constellations"! This mystery game is the most difficult yet, with a difficulty level of ★4 . To prevent any difficulty mismatch, it will only be available to customers who have played our cafe mystery games two or more times. Please enjoy the romance of the constellations and the many beautiful puzzles.
We await you with lighthearted puzzles, warm coffee, and the perfect puzzle-solving counter.
[Click here for reservation details]
Hatena Coffee Shop, a mystery-solving cafe in Ikebukuro, Tokyo ( https://hatenacoffee.experiful.jp/locations/ikebukuro/ )
◆About the operating company, "Experiful Co., Ltd."
Based on the belief that " the richness of life is determined by the total amount of memories ," we are an experiential entertainment planning company that was established as Japan's first memory venture . To date, we have operated four "Detective Camp" murder mystery specialty stores , four "Hatena Coffee Shop" mystery-solving cafes , published the "Pocket Mystery®" series of murder mystery games , planned and produced touring mystery-solving treasure hunt games, and planned and operated costume mystery-solving events . The content we have worked on so far has been featured in various media such as TV, radio, and magazines, including "Mezamashi TV" and "Akko ni Omakase! ". Through these businesses, we will continue our activities with the mission of realizing a society "full of people overflowing with memories."
◆Store Overview
◯Store name: Hatena Coffee Shop Tokyo Ikebukuro Branch
Address: Room A, 7th Floor, Toyo Building, 1-1-3 Ikebukuro, Toshima-ku, Tokyo 170-0014 (Elevator available)
Access: 3-minute walk from JR Ikebukuro Station
◯Opening hours: 11:30 – 21:00 (Closed on Mondays and Tuesdays, except on public holidays)
◯Price: Cafe puzzle fee (approximately 1,500 yen per puzzle) + food and drink fee (500 yen for drinks)
*We kindly request that each person order at least one puzzle and one drink.
◯ How to make a reservation: Please make a reservation through the Hatena Coffee Shop official website ( https://hatenacoffee.experiful.jp/locations/ikebukuro/ ).
◯Operating company: Experiful Co., Ltd. ( https://experiful.jp/ )
◆Company Overview
◎Company Name: Experiful Co., Ltd.
◎Representative Director: Reo Nagayoshi
◎Head office address: 4th floor, Chuko Building, 1-14-14 Ginza, Chuo-ku, Tokyo
◎Contact: 03-5577-2264 (leo.nagayasu@experiful.jp)
◎Website: https://experiful.jp/
[Experiful Co., Ltd.] Press Release
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