Joonwoo just learned a very valuable lesson: The pen is definitely mightier than the sword.
Fighting can only take you so far, but psychological warfare shuts shit down and even completely turns the tables on the opponent. He needs to learn this and also learn how to effectively counter it if he ever hopes to defeat the class prez. Han Sol is basically a female version of the class prez, but she's still a tier below him, so it'd be good practice for Joonwoo to clash with her before even thinking of challenging the prez.
I don't feel sorry for Yoorim as she had it coming, but I'm inclined to agree with Joonwoo on this. Redirecting the problem to someone else doesn't solve it. As much as I think Yoorim deserves it, I also think that she should atone in a different way.
The way I see it is that the class prez is basically his own faction. He doesn't have any subordinates, but he's so adept at manipulating people, that anyone can become his pawn at any given time. Han sol also has a faction of her own and that's basically every girl in the class. She's like a less-skilled version of the prez, so instead of acting from the shadows, she establishes a pack mentality and lets their numbers overwhelm the target.
For Joonwoo to defeat both, he'll need to gradually gather allies and we can already see his faction slowly, but surely forming before our very eyes. He basically already has Hamin and Yuri in his pocket. Taeyang is a work-in-progress, but I think it's safe to say that he's a guaranteed ally at this point. Most of us would hate for this to happen, but I'm 99% certain that Lila is guaranteed to fall in later and now from the looks of things, according to how he approaches and handles Yoorim, she may be a potential ally in the making.
@givemersspls
I agree with you for the most part. Some of the people Joonwoo's willing to white knight for have put him or people close to him through a lot of shit, but he's willing to look the other way and the reasons he gives for doing so are quite frankly, stupid. I won't harp on this too much since I was discussing it in-depth a couple chapters back.