Mark books as valid

[Sunny]

These books are currently marked as ‘invalid’, but I think should be valid:

Book 1:

https://www.goodreads.com/book/show/1...
https://www.amazon.co.jp/-/en/gp/prod...
https://www.shogakukan.co.jp/books/09...

===

Book 2:

https://www.goodreads.com/book/show/1...
https://www.amazon.co.jp/dp/B0CGX3NCT5/
https://kc.kodansha.co.jp/product?ite...

[David]

You are a librarian. Is there any reason you didn't do this yourself?