I can apply for a green card in Japan for several years.

1, Japan's green card is called permanent residence, but no one actually said that. You need to live in Japan continuously for more than 10 years and have 5 years working experience in Japan. Of course, there are other conditions for applying for permanent residence, such as whether you have violated Japanese laws, whether you have paid taxes, whether you have a stable living foundation, and so on. The most demanding condition should be the length of stay in Japan.

2. Need to reform and wait patiently for the new policy. Senior talents can be obtained in Japan in five years. I don't know much about the card retention system, nor have I studied it.

3. It will be easier and easier.