Woo lived in Japan for three years and studied at the Tokyo Polytechnic University for Industrial Art.
A representative of MBK Entertainment revealed in the middle of 2013 that they had no plans for Coed School to reform again, as both of its sub-units had grown and changed their line-ups to become independent groups.
The 15-minute drama music video for their debut track is based on the Gwangju Uprising and features actors such as Park Bo-young, Ji Chang-wook, Ha Seok-jin and A Pink's Naeun.
[8][9][10] In October 2013, Woo and Sejoon (of Speed) went to Los Angeles to meet with Ray J and other rappers in order to record a new song and music video.
In March 2015, Woo withdrew from the group for pursue solo career while MBK still managed him.
Woo also has a rap group called "Royal Class", including himself, Roydo, Chancey The Glow, Sims of M.I.B, Konquest, KittiB and Mino from Winner.