
Yuri needs to stop projecting himself into Sunwoo, it's not his problem. All the plot is literally something he has no voice or opportunity to act on. Yuri is frustrated because he knows it so he found in Sunwoo a place where he can liberate all those negative feelings. I don't believe for one second he is doing this to protect Heejo. Dude, stop-

I saw someone else comment saying that maybe yuri doubts that the bil was completely honest with the sister, like they married fast and the bil was maybe in a relationship with the teacher just before soooo it may have some words story in there
I’m bad at explanation lmao I hope you understood what I was trying to say

Don't worry, I understood you The one who I don't get is Yuri lmao I mean- his reasons to question his sister's marriage are legit, and the only link Yuri has to get the truth is Sunwoo... But Yuri is not investigating the situation, he is harassing Sunwoo, someone who is suffering as well. Heck, Sunwoo's suffering and even his kindness annoy him because somehow Yuri sees him complicit in the situation when in reality he is not. Maybe Yuri is telling himself he is doing the right thing since his reasons to suspect about the marriage are good, but he is taking it personally and that's where he goes wrong.

I don't really like Taku that much, but he honestly deserves better. A very dangerous characteristic of Taku (+and Haesoo) is that he is empty and engaged to fill this through selfish love, something that really won't solve anything. It's concerning that someone is willing to be used and experience fake feelings instead of moving on with his life.
He had never loved someone, Taku saw his previous partners as candies that lost their flavor the more he ate them. He joined the sweetness not because he really wanted to but because it was what they expected of him. But Haesoo was different. His apathy attracted him even though he wasn't on board with the idea of experiencing it. Taku, in addition to seeing the possible taboo relationship he had with Joowon, liked the concept of Haesoo. Someone who is broken, someone who needed him. Taku admits that it was not difficult for him to get close to Haesoo because he already knew the root of the other's pain in a certain way thanks to his stories.
But this was also his biggest mistake, taking them so seriously that when Haesoo leaves the character that Taku knows, he doesn't understand. Taku doesn't really know Haesoo, much less the relationship he shared with Joowon. Taku never knew Haesoo or Joowon beyond Haesoo's narrations. That is why every time one of the two proves to him that he has no idea how strong and complex their relationship is, he gets stressed. Their history no longer attracts him.
He will not be a victim because he always knew what he was getting into, but Taku has an emotional void that he will not be able to fill with someone who sought comfort from him in the wake of someone else. He is getting so much hope for something that is so empty and shallow, it's kinda hard to read.

So... Yahwi literally got the Jiwon evolution from BJ Alex where he is suddenly a "good guy" but he got it worst. He didn't do it throughout the season or even after some background story wtf the man did it in THREE CHAPTERS after some very questionable scenes-- Bro. He is hot? Yes, but he sucks.

The worst part is that he didn't do this after losing Jooin, when he was confronted about it since the other can't any longer continue their past dynamic, he still plays the unapproachable. Ok, asshole. But later, Yahwi saw Jooin moving on with another and then, and only then he started having problems. Maybe I went ahead of myself calling this his development, he could very well be manipulating Jooin
This seems so stupid, I'm going to read the hell out of this HECK YES