[6] U-Kwon released his first Japanese solo, "Painless" (痛くない), on June 24, 2016; the song was composed by him for the short vampire film Q Chan, in which he starred.
[11] In June 2017, U-Kwon and fellow Block B member P.O received the Maxim K-Model Icon Idol Award.
[12] U-Kwon performed a seven-show, six-city tour of Japan from August 26 to September 7, 2017, along with fellow Block B member Taeil as the special unit T2u.
[14] On October 18, it was announced that U-Kwon had been selected to host the music show The Power of K, along with Nancy of Momoland and Shownu of Monsta X.
[23] U-Kwon was discharged from military service on November 21, 2021 without returning to the unit after his last vacation in accordance with the Ministry of Defense guidelines for preventing the spread of COVID-19.