This was borderline unbearable. Ah Young was so frustrating all the way through, and even the ending made no sense. I guess she couldn't understand that Jae in disliked parts of her but loved her as a whole. It was so frustrating to watch the overly emotional experienced person expect the inexperienced sociopath to understand her vague social cues without any help.
If you are considering finding the full side story of Ah Young and Jae in, don't. The short bit from the handful of time skip side stories is plenty and leaves things in a better space.