Debated long before starting this, cause high rated K-dramas in actual had not done it for me, recently. Took a chance, binged it with a few episodes in 1.5x speed & wrapped up in under 6 hours. Have not seen the webtoon, so my review is basis the drama only. Given the high rating this drama has, mine would come across unpopular but this is my humble take on it.

10/10 for the acting, but 7/10 for the story/writing.

If the message of the drama was on taking action than talking like mature people; giving in to pure unadulterated rage because you have been a victim too long, then it did not appeal to me. I cannot imagine what are they going to portray in Season 2 differently, other than more rage-fights in a different setting. This season in itself is complete though not satisfactory, with half-hearted character developments & relationships. Honestly, I found the first half to be better, which is what kept me engaged to finish it. But the latter half of the show for me just lost the point or rather could not make a definite point. While the action scenes were good they could not carry the weight of the drama which ultimately made it lose the initial charm & excitement.

We have seen bullying in shows, anime, manga in varying degrees. This drama interprets/portrays it well in terms of:
1. how bullies are (how they get into it sometimes due to situation but in the end by their own choice)
2. how the main characters stand up to it, while forming a bond themselves
3. what are the external factors that affects this evil of our society (role of adults and their interference)
4. Overall the impact of all the above on the lives of the main characters and those around them, which is a message to real society.

Si-Eun is not shown as a conventional hero - while he is gutsy, uses his wits to fight battles but does not always come on the top on his own but has help. The help comes in form of the deuteragonists/his friends, support characters, situations etc. which keeps the story/character (almost) realistic. Expecting the story to continue on this track, with Si-Eun grows individually, enjoying new friendships, courage to stand up to the bullies & the associated evils (gang, unethical adults). Si-Eun, Su-ho & Beom-Seok while had different personalities, family issues etc. I thought the focus would be on their growing bond/bromance even if they face ups & downs, growing into mature adults. I was surprised, but ready to understand when the story takes a different turn (the rift in friendship). But my problem lies with the fact that the writers/directors did not execute this unexpected turn well as below:

1. They did not explain the rift well, cause they did not explore the grey character well.
- We have bits and pieces of their backstory, minimal depiction of their internal debate & anguish.
- It is like the character woke up one day and chose to be evil. The transition & its explanation is missing, which is the fault of writers/directors.
- Neither do other characters make efforts to understand them, but rather take it on face value. So we cannot even understand the gray character from their perspective.

2. Si-Eun being filled with pure, unadulterated rage as he pulverizes everyone in sight. Like why? And why all the time?
- Being the ML, he takes things into own hands to mitigate the above said rift.
- But the focus shifts from communication to just violence/pure rage.
- Si-Eun is essentially a character who uses brains more than brawns.
- Seeing him throughout the drama, especially second half - I am wondering if the focus of the whole story only on taking action & not being calm/practical/ mature about situations?

3. The whole character of Su-ho and Beom-Seok was just messed up in 2nd Half.
- Add in Lee Yeon's character's influence in all of it, it makes it even worse.

The second half lacks proper explanation, characters' choices are more confusing than making me fully sympathize/hate any character. It's like just because they realized that they can fight, so they end up fighting all the time for every situation. Like what happened to calmly talking or discussing, especially given these characters are not inherently prone to action.

Personally, I would say it is a good drama with some great acting, so definitely a one-time watch.
But it is not a great drama that I would recommend (i.e. pester you until you watch it) or be memorable for me.