So Mc wants to indulge in his desires but can't because he doesn't want a guilty concience? Easy, just do it to some evil chick. You can literally force them to confess their misdeeds. Just find a scammer/murderer/jaywalker and have your way with them. Evil people don't deserve to be treated...
Whether or not your old racial grievance is historically accurate or not is irrelevant since it's always used as justification to act against random people who "belong to the group" that did the misdeed. Mc's have full justification to kill those hit and run aliens, and the aliens who assault...
is it still racist if we swap out the aliens for white people and change the setting from "earth" to "africa"? Probably not, by the stupid new age definition of racism.
It's crazy how the "victim" fmc admits she started a genocidal campaign against humanity because we're a "disease" to her and people still sympathize with her. Who would care if Hitler, Stalin or Mao got abused after doing what they did?
The people talking about the dude being worse than the monster girl are weird. She's seems to be a serial killer. Slavery is way too light of a punishment for that. She should be executed, but alas she is cute so she gets to be a slave maid.