Proposal : Update Manga Shimai synopsis

Proposal details

This proposal will make the following change(s):

Update the synopsis of the manga Shimai

Change the synopsis from:
Unknown
to
A girl catches her little sister Yuki masturbating to her, and it turns out that she's a futanari to boot. How can she approach this delicate situation without hurting Yuki's feelings? (Source: MyAnimeList)

Based on the following reason: Missing