How to use sort title?

[TheDreadPirate]

Keep in mind that Jellyfin relies on your file naming and organization matching your preferred metadata source (TMDB by default). The way you are trying to name your folders is fighting against what Jellyfin expects and needs to work automatically.

Ideally, what you should be doing is putting all your Specials in a "Specials" folder. Some times TMDB/TVDB/AniDB will automatically pull down metadata for placing a special before or after the regular season episodes. If it doesn't you can manually edit the specials to specify what episode they will appear before/after.