Another movie that I had to rent on Prime to watch is #MyAnnoyingBrother (also called Hyung) where he plays an Olympic judo athlete who loses his sight and his older brother (played by Jo Jung-suk) is released from prison to help him.
And then on YouTube is this short webseries where he plays a film student trying to make his first movie. Only 6 episodes: https://youtu.be/-jZD3L5nUj0