Merge author

[João]

Same author, two pages, name order changed because confusion that usually happens with japanese authors' names.

https://www.goodreads.com/author/show...
https://www.goodreads.com/author/show...

By the way, here is a picture of the author http://i.gzn.jp/img/2008/06/20/raiku/... for completeness sake.

[Z-squared]

done, although we can't use author pictures unless the copyright is clear