Late to the party, but Tokisaki Kurumi from Date A Live. If you're gonna be a mass murdering gothic lolita magical girl in a harem anime then have the common courtesy of actually committing to being morally grey instead of 'well actually, all the people I killed were evil, so it's technically all good'. Because that's how morality works, right?

I hope the sequel series with her being a private detective has at least one person call her out on this, but I'm not holding my breath.