Proposed by Mawoin on 10 Feb. 2023 at 10:46 AM
This proposal will make the following change(s):
Update the series of the anime Tanoshii Muumin Ikka
Change the series from :
Unknown
to
Muumin
Based on the following reason: Missing
With the source: https://myanimelist.net/anime/2150/Tanoshii_Muumin_Ikka
