Dynamic Duo's member Choiza joined "The Human Condition".

In KBS2 "The Human Condition" filming held on April 21, Choiza showed up instead of Kim Ki Ri.

Kim Ki Ri got a surgery two weeks ago and is currently recovering so he was not able to attend the filming. Choiza decided to join just to replace Kim Ki Ri while he's away.

Many are curious whether Choiza will become a permanent member along with the other cast members. They commented, "I wish he would become permanent", "It'll be really fun if he keeps coming out", etc.