Context for Westerners:

“Over the past 20 years Halloween has become its own unique thing in Japan, which I believe comes down to cultural traditions and norms. For example…taking your kids to strangers homes or apartments and demanding candy? Well, that doesn't go over too well in Japan.

[…]

Japanese businesses realized that there is a lot of money to be made in Halloween. And, before the pandemic, the holiday was bringing in billions of yen. So municipal governments followed the money and positioned themselves as “Halloween friendly.” Shibuya Mayor Ken Hasebe was one of those touting Halloween but this year he's telling everyone to take the party elsewhere, not on the streets of Shibuya, where it's become a bit of a new tradition. One reason he wants people to stay away is safety. And he cites last year's Halloween crush in Seoul that killed 159 people as an example.”

https://www.japantimes.co.jp/podcast/2023/10/26/deep-dive/halloween-tokyo-seoul/