Responses
Chapter 20 is when he first bumps into the other twin, he has a hoodie and sunglasses like in 31 and he goes to the dinner, he's wearing the same suit. Everything before that is Hajun, our ML.
Oof, so this has been going on for a while. Aw, man!
Three things:
1. YES to MC for beating up the twin and calling him out for being an inconsiderate jerk.
2. NO to the fact that the ending seems to hint at MC understanding the twin because he had a nightmare of MC getting bored and leaving him. What? No! These are two very different situations. You're both insecure, but he's possessive whereas you're not.
3. So someone do the math; how long has the switcheroo been going on? They showed a flashback, but I don't remember which chapter that was. If it's been going on for a while, I'm afraid we're gonna unlock the throuple ending.
Honestly I'm worried about the twin getting off the hook for integrating himself into his brother's relationship because they've never been apart, and MC just letting it slide and being with both of them. Best I can hope for is the twin getting a slap on the wrist and staying out of MC and ML's relationships, but I'll take it over a throuple ending.