Proposed by Koendersss on 20 Jan. 2023 at 08:23 PM
This proposal will make the following change(s):
Update the season of the anime 20-dai no Heya-hen
Change the season from Unknown to Winter 2015
Based on the following reason: Missing
With the source: https://myanimelist.net/anime/29347/20-dai_no_Heya-hen
