Yuki's manga / #Fucked up brother and mother(1)

https://newtoki95.com/webtoon/2252251?stx=%EC%95%85%EB%85%80%EB%8A%94+%EB%91%90+%EB%B2%88+%EC%82%B0%EB%8B%A4&title=%EC%95%85%EB%85%80%EB%8A%94+%EB%91%90+%EB%B2%88+%EC%82%B0%EB%8B%A4