Proposed by Coco01 on 29 Jan. 2023 at 01:29 AM
This proposal will make the following change(s):
Update the episodes duration of the anime Nana Maru San Batsu
Change the episodes duration from Unknown to 23min.
Based on the following reason: Missing
With the source: https://myanimelist.net/anime/34580/Nana_Maru_San_Batsu