Hello. Because I found parts of the unity manual that cannot be read in Japanese, I’d like to translate them into Japanese.
Can I do this and edit pictures in the manual to use on own website?
You’re unlikely to get an official response to legal questions on these forums, but I would be very surprised if Unity had any complaints about any activities that increases the spread of information and knowledge about their product.
So I’d say go for it, but just make it clear that it’s not the official Japanese Unity manual.