That's the dumbest thing he could have done, why would someone you attacked help you, he could have tried asking first and attacked if she said no if he's that curious.

Damn, my bad

Its a comedy anime where a man stressed from work has that fox girl take care of him, like cooking and cleaning

Don't think she was his wife just his care taker since I not labeled as a romance

We don't worry about nukes cause it would just cause mutual destruction, no one would win, and the world is not peaceful just because where you live is.

Our world is not peaceful

Denji has definitely changed as a person, but if u mean develope strength wise he could only do that through people fearing him which all these fake chainsawmen are doing