Japanese Government Calls on Sora 2 Maker OpenAI to Refrain From Copyright Infringement, Says Characters From Manga and Anime Are 'Irreplaceable Treasures' That Japan Boasts to the World
Japanese Government Calls on Sora 2 Maker OpenAI to Refrain From Copyright Infringement, Says Characters From Manga and Anime Are 'Irreplaceable Treasures' That Japan Boasts to the World

Japanese Government Calls on Sora 2 Maker OpenAI to Refrain From Copyright Infringement, Says Characters From Manga and Anime Are 'Irreplaceable Treasures' That Japan Boasts to the World - IGN

Japan has some of the worst copyright and fair use laws in the world.
Satire is often times considered copy right infringing.
I wouldn't say they're worse. I'd say they're confusing as hell.
For example: fan manga are absolutely okay.
Fan manga and other doujin works usually depends on the original copyright holder for enforcement.
Some are pretty open for any fanworks being commercialized as long it's limited and case by case basis. For example, Love Live franchise allows doujin manga and other doujinshi works, but not with fanmerch. Serial Experiments Lain generally allows various stuff, but not R18 content. Some others like Yakitate Japan mangaka just happy seing his works have so many adult doujin manga, and even lining up on Comiket buying them.