The revenge is just so weak, it's really the worst. Reason this story is shitty, author just loves his traumatic sex crimes while writing poor imagination for the MC. It's like every revenge is short term zombie male rape or he just does the raping personally.
This girl? She despises males, is a disturbed individual that drugs rapes and kills innocent women. Based on the world? From the understanding of earlier chapters, cut off limbs can't be healed unless MC himself does it. Slavery is accepted, cruel torture is common place.
I may sound as bad or worse, but if someone was at this level of cruel and twisted, who also happened to screw me over repeatedly? I'm sure they have disturbing brothels that MC can 'give' blade Hero to.
You know, after he cuts off her hands and feet. Changes her face a bit to look unlike the blade Hero. Hell, remove all her teeth so she can't bite her tongue (because apparently that's a suicide method?).
Sounds like a decent revenge. Years of sexual slavery with thousands of Men she so despises.
Basically, author is both disturbed and weak.