That thinking is such cancer. The best way to treat situations like this is for society to be understanding while still giving punishment as per the law. The murderer basically sacrificed his life to get rid of trash within the society. He may shouldn't be celebrated, but he should be at least spared from guilt trip.Just the first chapter and thing starts heavy AF. Welp. I has the markings of being a very good read though, so hopefully it delivers.
And yes. The POS teacher deserved to die as horribly as he did.
Not entirely sure if he should be considered a hero, he still murdered in revenge even if completely justified in his reasoning (and personally condoning the murder). But you're right that society should be more understanding of what happened and why. Guess it's those "how dare you disturb the peace, even if the world is better because of what you did" things many societies have.
As a member of a rapist's family, It is okay (normal even) to feel robbed of a precious family member (especially if the rapist acts like a decent human being in front of the family). But your family actually RAPED and KILLED someone else's family member. THAT. THAT is key here. You should be understanding that even if your rapist dad acted good for you, he is actually trash that endangers everyone else.
Of course this is just my personal view. But I think this is better than some daughter of a rapist guilt tripping the brother of a murdered and raped little sister.