Young Joon gets infuriated with jealousy after Mi So went to the blind date. They visit Yumung Group's art center to expedite the opening, but accidentally trapped in the library section and spend a romantic moment together. Meanwhile, Young Joon's brother Sung Yeon returns to Korea after 3 years abroad to visit his family. However, something is not quite right the way Young Joon greets his long waited brother home.
What's Wrong with Secretary Kim
Season Number: 1
Episode Number: 4
Episode Title: I Come Back to Forgive You
Air Date: Jun 14, 2018