Cannot get anime special added into a library

Plex Media Server Metadata & Adding Files
1

I’m trying to add an OVA episode of an anime, and even after matching the file name to the name on tvdb, the file will not appear in my library. Here is the link to the tvdb page: https://thetvdb.com/series/steins-gate0/seasons/official/0

The file was named with English characters, so I tried changing the name to the Japanese name “境界面上のミッシングリンク(STEINS;GATE #23(β))”. This didn’t seem to work.

What else do I need to do to get this file (.mkv file) to appear in my library?

Server Version#: 4.30.2

2

The season number of the Specials season is 00.

3

What’s the recommended format for adding this info into the title, given it’s in Japanese?

4

Please click on my link.

5

Well your link didn’t have the information I was looking for, but I found on a separate page that you can add special/unlisted episodes into a “Season 00” folder, and append something like “s00e99” on the end of the episode. Thanks the the help.