Review of Redo of Healer
Remove the edginess and the porn stuff, and you have a basic story. There is nothing amazing, nor disastrous about this anime. The antagonists are meant to be one-sided bad and have a life span of one or maybe two episodes after they show up. And no, they are not dangerous to the main protag. The protagonists are one-sided good, and they are so strong the antagonists don't really stand a chance, though the show tries to make it look like that. If you want to make an amazing show, make the antagonist likeable, make them an actual challenge. Allow the protagonists to borderline lose like in Shield Hero.Don't make the protagonists perfect in a moral nor practical sense, maybe they could hurt the innocent in their quest for revenge. Maybe refer to some kind of eternal chain of hatred, allow one revenge lead to the other side wish to seek revenge, etc.
The show only does the bare minimum. You have an antagonist you are supposed to hate, and you have a protagonist you are supposed to support.