The retraction of Baek Su Jeong's statement regarding Ban Ju Yeon's hobbies from episode 1 and somewhat trying to understand him shows her growth as a character. Also, Choi Hyun Wook nails his role way too perfectly, the duality of being a person with responsibilities and a person with peculiar hobbies.
A lot of things happened in the first episode. For me, the highlight was the video game sequence and I'm not sure if we're gonna get another sequence or not (probably not), also seeing Ban Ju Yeon's room filled with comics and figurines to the brim felt rejuvenating (he is me except the rich part), and overall, the episode was extremely good and I enjoyed it.
The introduction was fairly simple, and there wasn't anything peculiar about it except for the numerous changes they made to Woo Seul Gi's character. Overall, a good start, nothing too good to stand out on its own, neither anything too terrible.