Recently a lot of shows with plots that have so much potential get wasted because they decided to focus on the romance more and not what actually makes sense.

This is very biased as I prefer plots without unnecessary romance but I just don't get why all that had to happen?? If you think about it, In Han's death having any correlation with any of the relationships is so far fetched.
1. Without RiAn he still would have gotten bullied and would of had to escape and run away
2. The teacher had no reason to run after him??? literally???? and it could have been easily replaced by him witnessing something else and not a makeout session

The plot had so much potential since it's so similar to Revenge of Others but it kind of just failed??

The mc is also just a fucking simp?? Whenever Jaei was talking about how it was her fault and only hers, he really denied it and said he'd go after whoever is threatening her???? then when RiAn breathed the same air, Kang Ha accuses him of every single crime possible?? Jaei also needs to make up her mind. She's obviously in love with RiAn but she admitted to having liked Kang Ha?? In my opinion this just seemed so force and I'm glad they didn't end up together, I mean, she was literally involved in your brother's death?? the reason why you're here??? He didn't even fully expose her or RiAn and they barely got any punishment and at the end she literally says "This isn't enough for what we've done" YEAH WELL. If only Kang Ha actually had a backbone..

Ep 1-2: exciting, new, Jaei and Kang Ha's romance starting to develop and we understand the reason why he's here more
Ep 3-4: Climax of the story, omg????
Ep 5: Could have ended here
Ep 6-7: Dragging it on

The plot was boring and left so many things unclear
All I'm saying is that we could have totally ended the show by Ep 5-6 if they didn't show a bunch of romance scenes that had nothing to do with the plot. I mean, how are you going to come up with a good plot then waste it by throwing in kissing scenes???