I would have loved if they continued ‘So That's How, The Saintess Became The Devil Of Revenge’, but they cancelled it. I’ll link it.
http://www.mangago.zone/read-manga/so_that_s_how_the_saintess_became_the_devil_of_revenge/
Just read it three chapters
No, this is VASTLY superior. Raoul doesn't use innocent people to exact his revenge, he doesn't want to harm innocent bystanders and, most importantly, his revenge, nor his persona, is warped by sexual urges and lust.
Sure, the cover is a little suggestive, but that's all it is. If he did utilize sex as a revenge, I think he'd use devices rather than, well, his own "device".
Also, unlike the MC of Redo of a Healer, this MC is adorable. Even when he gets "scary face" he's pretty cute in a way.
THIS should have had an anime. Not that literal venenge porn shit.
To be fair though, I don't think Raoul was drugged and r*ped. His experiences are a lot milder in comparison, but only if you trivialize psychological and emotional torture. Somehow, if something similar occured, I still don't think he'd do what that sicko in RoaH did.
He just has more CLASS.
There is actually one manga that is worse than RoaH. I hate it so much, but I keep reading hoping the @sshole gets his comeuppance. He's not sympathetic at all! I kind of get the MC of RoaH a bit, but this guy is 100x worse.
I forget the manga name, but it updates infrequently. It's about a mage who was reincarnated/ressurected as a demon lord. He hurts innocent people for the lulz. His revenge is against all people, love, friendship and anything positive. I frickin' hate him. He just wants to bang any attractive female he gets his hands on, uses drugs on them, and kills everyone else.
Why?
Because his adoptive mother who began a sexual relationship with him when he was still a kid was killed by humans because she was a witch. That's it. -_-

THIS IS BETTER THAN REDO OF HEALER