How many movies have Sang Woo and Ya Sin-soo collaborated on?

They have worked on 3 movies together! Their first movie together was Friend's Son Eradicating Aunt (2021) while their highest rated movie together was A Married Woman's Ejaculation Log (2022). They have not worked together since A Married Woman's Ejaculation Log (2022). They are most known for their romance films together.