Remilia to me is the literal personification of hell hath no fury like a woman scorned; I don't see her as inherently evil.

I read this as pure entertainment, not a story trying to teach a moral and tell you the protagonist's actions are morally okay. Also, I don't think the story intends you to believe that Remilia is a morally good person at all.

I was entertainment but I very much keep an eye on my information diet. Some information shouldn't be internalized, and I don't want to involuntarily become immoral person.

All media convey some ideas and I am picky what ideas I want to read about. Social media are involuntarily designed to manipulate minds and my opinion on this manga is an extension of that defense mechanism.

I enjoyed my time but wouldn't recommend it to anyone.

In my worldview revenge is wrong, and this manga paints a picture where revenge is good and outcomes of revenge are good. That fact just doesn't sit well with me.

To each their own. I feel as long as I personally recognize something is immoral in real life, I don't need a story to explicitly condemn it. I don't think I'll internalize a nonnegative—or even positive—portrayal of a bad act in a story as okay to do in real life.

I do recognize stories change minds, that little me read a fanfic with two men in a romantic situation, and it helped me internalize gay relationships as just normal relationships like any other instead of some weird thing you have to do in the privacy of your home while straight couples could hold hands outside judgment-free. That to people who think gay people are inherently sinners (or not sinners, but become sinners if they act on their feelings instead of repressing them and trying to be single forever/pretending to be straight) this would be "a nonnegative—or even positive—portrayal of a bad act in a story" teaching me that act is okay in real life. Stories can move the needle on what you believe is moral and immoral, yes.

But I'm also an adult with an idea of what is moral and what is not, and I think I'd be harder to win over on things like murder or revenge that I already have strong beliefs about. I can entertain ideas in fiction and enjoy a story without actually taking on the beliefs it seems to hold, or that the protagonist seems to hold (sometimes those things are different! Lolita has the narrator defend his pedophilia, but the story and author want you to think the narrator is disgusting—it is supposed to be an anti-pedophilia story).

I've found a lot of people who believe that anything that's less squeaky-clean than a Sunday school lesson will inevitably do harm and needs to be banned for everyone, not just their own personal consumption, so sorry if I'm coming off defensive. It's perfectly fine to decide this is not for you because you prefer stories with more upright protagonists, a clearer moral, etc. and because you think you might be easily influenced into taking on some bad traits. It is just that I have often seen that attitude pair with "everyone will be easily influenced into immorality by this, so it needs to go"—but I know it won't always.

For what it is worth, I am able to flip off the morality switch in my head and enjoy the story, while also being adamantly anti-revenge in real life—the fact people enjoy and proudly post stories of them being mean to real people online (r/prorevenge and the like) makes me very uncomfortable, and also overly concerned about offending people lest they decide that is worth making my life harder.

And there is absolutely nothing wrong with that. We just have different opinions. 😊