First thing where is your library pointing to? /storage/media/JP_Variety_Shows or /storage/media
for naming, try:
Idoling!!! (2006) {tvdb-433367}/Season 2008/Idoling!!! - S2008E272 - Oshirasengu!!!.mkv
Using { } are directive markers, it may not parse it without those. Also when renaming please plex dance it.
