Firstly, when updating the TVDB, it can take a few hours for the updates to flow through the servers around the world. But your edits on the 19th are well and truly updated everywhere.
I named the tv show as ...
Sono Toki Heart wa Nusumareta その時、ハートは盗まれた [1992] because that is how it is at TVDB. (we might need to fix that depending upon your answers above)
The episodes I named as...
Sono Toki Heart wa Nusumareta その時、ハートは盗まれた [1992] S01E01
I had to modify my TVDB scraper settings. My primary language is set as English. I then set the fallback language as Japanese, and I was able to scrape the show.
To change your scraper settings...
1.navigate to Videos>Files.
2. Highlight the source that holds the TV show.
3. Call up the Context Menu
4. Select "Change Content"
5. Go to TVDB Settings and adjust settings.