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​Let's all help foreigners visiting Japan!

Let me KNOW! Travel

​Easy, anyone can use it!



①When you need support, just enter the problem you are having or what you would like help with using "new request"!

② If you want to help, find someone in need from “need you help” and chat immediately!


​With automatic translation

Automatically convert the language of the communication partner! ​You can communicate without worrying about language!


Opponent: French

Supporter: Japanese

If ​, it will be automatically converted to Japanese.



If there is no support person around, you can contact the "Virtual guide". We will respond to your inquiries using the latest AI technology!


​Japanese/English/Chinese (simplified/traditional) manual is

Please download from below



​Chinese (Simplified)

​Chinese (Traditional)

  • Is there a charge to use the app?
    It's free, so please use it with confidence.
  • What kind of service?
    This is a service where foreigners visiting Japan can register their problems on the app and a local person will first assist them via chat.
  • I can't speak a foreign language, is that okay?
    Since it has an automatic translation function, you can communicate as if you were speaking your native language.
  • Please tell me about the service area.
    During the demonstration experiment, we will be located in Joetsu City, Niigata Prefecture. At the time of full-scale rollout, we are considering expanding the service area.
  • What should I do if I have a problem with the app or have a request for improvement?
    I'm sorry for causing you trouble. We welcome your requests, so please feel free to contact us using the details below.
  • Is it a translation service?
    This is not a translation service. Although we are equipped with an automatic translation function to facilitate communication between foreigners visiting Japan and their supporters, We focus on support services for foreigners visiting Japan that connect the two.
  • Please tell us about your business model after conducting the demonstration experiment.
    We are currently considering multiple options for business models after the demonstration experiment. We are considering advertising/optional services, etc.
  • Please tell us why you chose Joetsu City for the demonstration experiment.
    The reason is as follows. ① The number of foreigners visiting Japan, including from neighboring municipalities, is on the rise. ② There are plenty of supporters, including universities and local guides. ③Representative employee/CEO has ties to Joetsu City
  • I would like to inquire regarding the press release on February 26, 2024.
    We apologize for the inconvenience, but could you please contact us at We will contact you by return email or phone.
  • Please tell me about other services other than Let me KNOW!® Travel.
    Let me KNOW!® Travel is the first communication platform provided by YUI. In the future, we will provide ideas and services to connect people, culture, customs, distance, and hearts. We are considering providing the second service around the summer of 2024.
  • Would you like to discuss collaboration? Is that possible?
    We welcome inquiries about mutually increasing added value and new business through collaboration. We would appreciate it if you could contact us from
  • Where is your headquarters located?
    It will be Yokohama City, Kanagawa Prefecture.
  • I understand that you are a recently established vendor, but what kind of members does the company consist of?
    Our team is comprised of members with over 20 years of experience in sales, service planning, development, and operations in the IT industry.
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