Proposal : Update Manga Hyouryuu Kyoushitsu published date

Proposal details

This proposal will make the following change(s):

Update the published date of the manga Hyouryuu Kyoushitsu

Change the published date from :
Start Date :
Day : Unknown
Month : Unknown
Year : 1972
-
End Date :
Day : Unknown
Month : Unknown
Year : 1974

to

Start Date :
Day : 14
Month : 5
Year : 1972
-
End Date :
Day : 30
Month : 6
Year : 1974

Based on the following reason: Update

With the source: https://anilist.co/manga/30970/The-Drifting-Classroom/