So I'm not sure if this theory has been posted before (sorry if it has, and it also kind of goes with the spin-off theories I've been seeing), but after the last chapter I've seen quite a bit of comments in regards to the crossroads the story is at at the moment - whether it's the start of Suae and Dohwa's relationship, or the start of the chase arc for Eun, where she inevitably choses him. But the one thing that I can't seem to get past when it comes to the latter, is what's going to happen when Suae finds out that Eun has been in touch with Ra-Im?

Based on the last chapter, it's very clear that Suae is at her breaking point when it comes to Eun - she very much has lost all patience with him. It reminds me of how she was when she was in the end stages of her relationship with Minu in Season 1.  Ra-Im was the catalyst of Suae being pushed into Eun's arms. I think in season 2, Ra-Im will become the catalyst for Suae moving forward once again, except this time it will be with Dohwa. 

I feel like Eun will chase Suae, but finding out that Ra-Im and Eun were in touch will be an act of betrayal that Suae will not be able to move past, and she'll lose her shit, regardless of how Eun tries to frame it. And while her and Dohwa always shared a deep bond, based on chapter 127 it's very clear that she felt a spark, and now romantic feelings are begging to blossom (similar to how her feelings slowly developed for Eun in season 1 while she sought closure with Minu). 

I feel like this is realistically where the story is heading, unless the author does something absolutely bonkers with the plot haha who knows! Always fun to speculate though. What do you guys think?

Ra-Im is the catalyst in season 1, and will be in season 2 as well