Starting with 8.0.0, Jaikoz doesn’t get a match with non-ascii titled releases. Following release with Japanese title for example. 8.0.1 and 8.0.2 have the same issue. There was no such issue when I was using Jaikoz7.1 and before.
http://musicbrainz.org/release/e329d1b0-ee88-3863-be73-15b63ab1940f
Ive double checked processing to ensure searches are utf-8 encoding requests and getting the right data back. Ive tested with another japanese artist plus my default non-latin artist Bj�rk and not finding any problem.
So could you try again please and then send me your support files (Advanced:Create Support Files), this will help greatly in pinpointing your issue.