Proposal : Update Manga Gantz no Moto: Oku Hiroya to SF Eiga Monogatari published date

Proposal details

This proposal will make the following change(s):

Update the published date of the manga Gantz no Moto: Oku Hiroya to SF Eiga Monogatari

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

to

Start Date :
Day : 1
Month : 1
Year : 2011
-
End Date :
Day : 1
Month : 1
Year : 2011

Based on the following reason: Missing

With the source: https://anilist.co/manga/54530/GANTZ-no-Moto-Oku-Hiroya-to-SF-Eiga-Monogatari/