Both were discussing about mental illness and the setting is the same.
Also the presentation of what's going on in one patient's mind is similar.

Chemistry wise, both were on the same level and also deals with college life.
It hit screen way back 2018, and I didn't watch Gangnam Beauty during its peak because I thought it's lame, but when I started episode 1 I felt CHEESE IN THE TRAP and yeah just like how awesome cheese in the trap is, I just also fell in love with this series.

They do have a different plot and story line, but the theme and the ambiance of these two drama are giving me the same feels. I also wanted to recommend Gapdong and I remember you, these are crime investigatory series too, which were a little bit lighter.

Pinocchio was actually the opposite of this series, but both were talking about media.
-So I think if you're seeking a more serious drama that tackles about media industry, I strongly suggest you watch this after. :)

They both have incredible psychopath killers, and the past and present stories were also linked to each other, that hunts the main characters.
-But though they have that kind of similarities, I think Gap Dong was darker than, 'I Remember You.'