Two four K! Hello, I'm Sungoh!
Sungoh (성오) is a South Korean singer under Choeun Entertainment. He was a member of the boy group 24K and its subunit 4K.
In 2016, it was announced he will not participate in any more activities due to his unfinished treatment for his dislocated shoulder and then upcoming enlistment.
On January 24, 2019, it was announced that after being discharged from the military, he has returned to Choeun Entertainment.