Permanent residency applications are being judged incredibly strictly. Citizenship applications need 10 years of continuous residence up from 5. Business manager visas have gone from needing 5m yen of capital to 30m yen.
It seems pretty clear that the goal is to get workers in for some productive years but make the path for staying difficult. I guess that's one way to solve an aging population problem.
To put things in perspective, Japan is an island and has entry and exit controls on the borders, so it is estimated that 0.05% of the population is illegal immigrants (people not leaving when their visa runs out). And the police can and do stop visible minorities to confirm their residence status on the spot. It is compulsory to carry identification documents if you are a foreigner. (There are questions about the legality of this but it is common and widely practiced).
[1] https://www.japantimes.co.jp/business/2025/10/27/india-valua...