He wouldn't need to use all of it just enough to get them to back off. I can't believe defending himself makes mc the bad guy smh.
And that's what I elaborated in the quote to your previous post, that possibly the player will get to choose to which degree using that power.
If used subtlety, he might keep a low profile while still being able to get rid of the bullies and whoever gets in the way of his LI, which could also mean preserving his "humanity" (granted there is any corruption) and open up genuine romance routes.
Should he instead give in to the power and bask in its perks, he might risk drawing attention from other demons and police alike, putting all the ones he loves at risk.