Worst Generation is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Today's kids have no manners.""It's you who raised them that way.Jung Buldo, the legendary fist, tries to start a new life after being released from prison.>However, those close to Buldo are being harassed by the new generation of MZ gangsters.Tae Eunseok, who has been watching this, tries to use Buldo for his own revenge...