
I do understand the getting to the point portion, but it feels like Seunghyun needs to be more of a piece of shit, and then maybe Namjoon(?) Oppa would've shown his shitty side later, or somewhere along the line of Eunseo changing and was like "Huh? You thought I was falling for you?" And turn it into something that they were both playing at.
Along the way sprinkle in Jinha being Jinha, and also include the rather darker past where during piano recital he called her Miss/my lady so she would be exposed.
Could also be that he (Jinha) was more attuned to his grandfather/being closer to the grandfather that he listened and treated Eunseo like a real lady when they first met, then got tired of it and that's why did not defend her during a few incidents etc.
I wished the author spaced out the story a bit more. the first few chapters felt rushed and got me really confused