Japan Iris Authentication:

Both the Tokyo Line and the Osaka Line are available, and the cost of Osaka should be less than half of Tokyo's.
Preparation before the trip: 1. Passport and visa (the threshold is very low, you can directly search for Youth Hostel visa service on Taobao). 2. Make a bank appointment to exchange some Japanese yen, around 5000-10000 should be enough, most places accept our quick payment methods. 3. If you have an iPhone, you can register for a Suica card directly, which is more convenient. 4. Purchase a Japanese SIM card on Taobao, and change the card and turn on the phone after landing. 5. Download Google Maps (it's very useful and can solve most problems).
Tokyo Line: You can fly to Tokyo and stay in Ikebukuro or Otsuka. There is a WLD coffee shop in Ikebukuro where the staff is a young man from Xinjiang and can communicate in Mandarin. There are many other shops with Chinese people. The housing prices here are relatively cheaper, usually ranging from 500-1500 RMB. There are many convenience stores in Japan, just like our pharmacies... After registration, you can explore Tokyo. It is generally necessary to make a reservation in advance for accommodation. Generally, check-in is after 3 pm and check-out is around 10-11 am in the morning. Please check the hotel information to avoid unnecessary trouble.
Osaka Line: Friends flying to Osaka can stay near Shinsaibashi. Shinsaibashi is considered a commercial street with several wld registration points nearby. There are many Chinese people in Osaka, so avoid excessive communication and do not trust others too much when you are away from home... Get your registration done and then enjoy shopping on the commercial street. The price of spas in Osaka is also half that of Tokyo [hmpf]. Accommodation ranges from 300 to 800... It varies depending on personal preferences, but overall it is half as cheap as Tokyo.
Friendly reminder: Everything else is not a problem, just pay attention to the transfer when taking the subway, Google Maps also provides tips. Other obstacles are not significant... Many times you need to get off and then back on at the same location, just adapt a few times and you'll be fine.
Wish you all a pleasant journey [可爱] [打call]