"Staff Disappear at 5 PM." Mystery-Solving Cafe "Hatenacoffee" All Stores to Adopt New Business Hours from May 1.
Experiential entertainment planning company Experiful announced that its mystery-solving cafe "Hatenacoffee" will extend its business hours from May 1, 2026, operating from 11:30 AM to 9:00 PM. A "no-staff hour" from 5 PM to 6 PM will restrict new entries. This change aims to capture lunch demand and offer diverse customer experiences.
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Experiential entertainment planning company Experiful Inc. (Headquarters: Chuo-ku, Tokyo; Representative Director: Reo Nagayasu) announces that all stores of its mystery-solving cafe "Hatenacoffee" will extend their business hours starting Friday, May 1, 2026. The new business hours will be from 11:30 AM to 9:00 PM. Additionally, the hour from 5:00 PM to 6:00 PM will be a "no-staff hour," during which no new customers will be admitted.
[Click here for reservation details]
Mystery-Solving Cafe Hatenacoffee (https://hatenacoffee.experiful.jp/)
◆ What is "Hatenacoffee"?
Hatenacoffee is a casual mystery-solving cafe where you can enjoy puzzles over a cup of coffee in a stylish interior. Its appeal lies in its casualness, allowing individuals or pairs to drop in without a reservation. Unlike experiential escape games, there are no time limits, so you can slowly enjoy solving mysteries at your own pace with a drink in hand. However, once you enter, you can't leave until you solve the mystery! Take your time to think deeply and reach the single truth.
All mysteries handled at Hatenacoffee are completely original, created by Experiful, an experiential entertainment planning company. Utilizing the expertise cultivated so far, they offer easy-to-enjoy and highly satisfying mysteries.
They will baffle you with various tricks, such as opening locked treasure chests, using unusual items, and manipulating mechanisms.
◆ "Can you solve this mystery?" Buzz on X before opening
Over 100,000 impressions in one day
For the first store, Hatenacoffee Yokohama Ekimae, befitting a mystery-solving cafe, the opening information was posted with a mystery on the official X (https://x.com/tanteicamp/status/1900126686424998098). As a result, it garnered a huge response of approximately 100,000 impressions in one day! Many voices of anticipation were received even before the opening.
Please try to challenge it yourself from here.
If you know the answer to this mystery, please enter your answer on this secret website.
https://tanteicamp.experiful.jp/secret-page/
And, the Yokohama Ekimae store welcomed over 500 customers within one month of opening, followed by over 800 customers at the Osaka Umeda store, allowing many people to enjoy casual cafe mysteries.
◆ Details of Business Hours Change
[Before Change] Business Hours: Weekdays 12:00 PM - 9:00 PM, Weekends/Holidays 1:30 PM - 9:00 PM
[After Change] Business Hours: 11:30 AM - 9:00 PM
* Please note that from 5:00 PM to 6:00 PM is a no-staff hour, so new entries will not be accepted. Customers already inside the store can continue to use the facilities.
This change applies to all stores (Yokohama Ekimae Store, Tokyo Shinjuku Store, Tokyo Ginza Store, Osaka Umeda Store, Tokyo Ikebukuro Store). Please check the official websites of each store and Hatenacoffee's website for details.
Business hours have been extended to before noon. As the lunch menu is also substantial, with pasta and hot sandwiches, please enjoy challenging lunch-time mysteries along with your meal.
[Click here for reservation details]
Relaxed Mystery-Solving Cafe Hatenacoffee (https://hatenacoffee.experiful.jp)
◆ About the operating company "Experiful Inc."
Experiful Inc. is an experiential entertainment planning company, launched as Japan's first "memory venture" based on the belief that "the richness of life is determined by the total amount of memories." So far, they have operated five murder mystery specialty stores "Tantei Camp" and five mystery-solving cafes "Hatenacoffee", published the murder mystery game "Pocket Mystery®" series, planned and produced roving mystery treasure hunt games, and managed costume mystery events. The content they have produced has been featured in various media, including Mezamashi TV and Akko ni Omakase!. Through these businesses, they continue their activities with the mission of realizing a society "overflowing with people overflowing with memories."
◆ Company Overview
◎Trade Name: Experiful Inc.
◎Representative Director: Reo Nagayasu
◎Head Office Location: 4th Floor, Chuko Building, 1-14-14 Ginza, Chuo-ku, Tokyo
◎Contact: 03-5577-2264 (leo.nagayasu@experiful.jp)
◎HP: https://experiful.jp/
◆ Inquiries regarding News Release
Contact: Experiful Inc. 03-5577-2264 (main) E-mail: leo.nagayasu@experi
Keywords:
[Click here for reservation details]
Mystery-Solving Cafe Hatenacoffee (https://hatenacoffee.experiful.jp/)
◆ What is "Hatenacoffee"?
Hatenacoffee is a casual mystery-solving cafe where you can enjoy puzzles over a cup of coffee in a stylish interior. Its appeal lies in its casualness, allowing individuals or pairs to drop in without a reservation. Unlike experiential escape games, there are no time limits, so you can slowly enjoy solving mysteries at your own pace with a drink in hand. However, once you enter, you can't leave until you solve the mystery! Take your time to think deeply and reach the single truth.
All mysteries handled at Hatenacoffee are completely original, created by Experiful, an experiential entertainment planning company. Utilizing the expertise cultivated so far, they offer easy-to-enjoy and highly satisfying mysteries.
They will baffle you with various tricks, such as opening locked treasure chests, using unusual items, and manipulating mechanisms.
◆ "Can you solve this mystery?" Buzz on X before opening
Over 100,000 impressions in one day
For the first store, Hatenacoffee Yokohama Ekimae, befitting a mystery-solving cafe, the opening information was posted with a mystery on the official X (https://x.com/tanteicamp/status/1900126686424998098). As a result, it garnered a huge response of approximately 100,000 impressions in one day! Many voices of anticipation were received even before the opening.
Please try to challenge it yourself from here.
If you know the answer to this mystery, please enter your answer on this secret website.
https://tanteicamp.experiful.jp/secret-page/
And, the Yokohama Ekimae store welcomed over 500 customers within one month of opening, followed by over 800 customers at the Osaka Umeda store, allowing many people to enjoy casual cafe mysteries.
◆ Details of Business Hours Change
[Before Change] Business Hours: Weekdays 12:00 PM - 9:00 PM, Weekends/Holidays 1:30 PM - 9:00 PM
[After Change] Business Hours: 11:30 AM - 9:00 PM
* Please note that from 5:00 PM to 6:00 PM is a no-staff hour, so new entries will not be accepted. Customers already inside the store can continue to use the facilities.
This change applies to all stores (Yokohama Ekimae Store, Tokyo Shinjuku Store, Tokyo Ginza Store, Osaka Umeda Store, Tokyo Ikebukuro Store). Please check the official websites of each store and Hatenacoffee's website for details.
Business hours have been extended to before noon. As the lunch menu is also substantial, with pasta and hot sandwiches, please enjoy challenging lunch-time mysteries along with your meal.
[Click here for reservation details]
Relaxed Mystery-Solving Cafe Hatenacoffee (https://hatenacoffee.experiful.jp)
◆ About the operating company "Experiful Inc."
Experiful Inc. is an experiential entertainment planning company, launched as Japan's first "memory venture" based on the belief that "the richness of life is determined by the total amount of memories." So far, they have operated five murder mystery specialty stores "Tantei Camp" and five mystery-solving cafes "Hatenacoffee", published the murder mystery game "Pocket Mystery®" series, planned and produced roving mystery treasure hunt games, and managed costume mystery events. The content they have produced has been featured in various media, including Mezamashi TV and Akko ni Omakase!. Through these businesses, they continue their activities with the mission of realizing a society "overflowing with people overflowing with memories."
◆ Company Overview
◎Trade Name: Experiful Inc.
◎Representative Director: Reo Nagayasu
◎Head Office Location: 4th Floor, Chuko Building, 1-14-14 Ginza, Chuo-ku, Tokyo
◎Contact: 03-5577-2264 (leo.nagayasu@experiful.jp)
◎HP: https://experiful.jp/
◆ Inquiries regarding News Release
Contact: Experiful Inc. 03-5577-2264 (main) E-mail: leo.nagayasu@experi
Keywords: