Ekaaachan's Manga

I just hate the story. They have almost 155 chapters to get revenge on the mother but they didn’t do it until chapter 156 and it’s sht too. I can’t believe they all have the resources and yet they chose to get tortured by that btch. I just don’t get it why they won’t fight back. The revenge part is very underwhelming, all those drama for what? To just reopen the case? The fxk is that? I hate that I wasted my time reading this.