Young Lady and Gentleman - Season 1 Episode 22 Sports Day
Overview: Jealousy overcomes Young Guk after seeing Dan Dan and Hyun Bin affectionately together. Using coincidence as an excuse, he tries to spend as much time with her as he can. Sa Ra attempts to get close to the 22-year-old Young Guk, but it's not as easy as she thought it would, and she becomes irritable. Meanwhile, Young Guk participates in Se Jong's sports day.