What are the cons of Tokyo Japan?

The lack of j-walking: It is considered rude to j-walk in Japan. ...
The lack of fruits and veggies: I won't deny that finding fresh fruit and veggies can be difficult in Tokyo, especially if you're on a tight budget. ...
Always having to use cash:

What is the biggest problem Tokyo is facing?

Tokyo is facing overpopulation as it attracts people from other areas of Japan and this is also causing a housing shortage in numerous parts of the city.

Is living in Tokyo stressful?

Living in Tokyo can be stressful due to factors like noise, crowds, and a lack of personal space. It's essential to find ways to manage this stress effectively.