There have been some (spiritual) sequels which have been or soon will be localized. Perhaps those can be an entry for anyone to see if the genre floats your boat!
https://store.steampowered.com/app/2061250/Shin_chan_Me_and_the_Professor_on_Summer_Vacation_The_Endless_SevenDay_Journey/ https://store.steampowered.com/app/2839280/NatsuMon_20th_Century_Summer_Kid/
In fact, someone might actually find that TUBI rips of OPs requested show have been posted to NZBgeek 38 days ago. Theoretically.
Edit: word of warning on the quality, not all episodes on TUBI seem to have gotten the same treatment. Some are noticeably lower res than others.