Proposed by BloodySnow on 16 May. 2023 at 09:32 PM
This proposal will make the following change(s):
Update the demographic of the manga Kyousei Hatsujou! Imouto no Kaihatsu Shita Himitsu Dougu de Osananajimi, Sensei, Idol wo......
Change the demographic from Unknown to Seinen
Based on the following reason: Missing