Jang Ji Sou is a South Korean YouTuber and rapper. He has always wanted to go to the US as he has been interested in hip-hop from an early age. He studied at an American university for one year before taking a break. He uploaded YouTube content and created the fictitious character named Quaddurup. He began uploading vlog contents, mukbang videos and other types of videos in early 2016. He also became a rapper and applied for several seasons of "Show Me The Money". In September 2021, he announced he was ending his activities as Quaddurup and began using his real name once again, switching his YouTube channel's name as well. (Source: MyDramaList) Watch drama online for free.