It's not copyright infringement / not illegal if it's legal and / or there's an exception for "information analysis": https://www.privacyworld.blog/2024/03/japa

It's not copyright infringement / not illegal if it's legal and / or there's an exception for "information analysis": https://www.privacyworld.blog/2024/03/japans-new-draft-guidelines-on-ai-and-copyright-is-it-really-ok-to-train-ai-using-pirated-materials/ https://www.privacyworld.blog/2024/03/japans-new-draft-guide... This is the tricky part; is it immoral? I think so, but that's a personal opinion. Is it illegal? Not by Japanese copyright laws.