Japan has extremely favorable copyright laws to the holders. My understanding is that without explicit permission, there is no fair use and so any reproduction or modified work is only allowed as long as they don't request a takedown.
> Japan’s copyright law allows AI developers to train models on copyrighted material without permission. This leeway is a direct result of a 2018 amendment to Japan’s Copyright Act, meant to encourage AI development in the country’s tech sector. The law does not, however, allow for wholesale reproduction of those works, or for AI developers to distribute copies in a way that will “unreasonably prejudice the interests of the copyright owner.”
Personally, About their news service, Their news summarization is kinda misleading with AI hallucination in some places.