That's literally a translation of Japanese Ruby text(small text above a word to show which pronunciation to use) when there's an intended double meaning in this case the Japanese word for justice being pronounced like love.this is why fan translations are such shit. 'hammer of justice (love)'? if you can't translate honestly, then fuck off.
"Kill them with kindness" but there's no killing because we can't have that now can we?"I'm gonna trick these FOOLS, I will be NICE - and then in turn THEY will like ME .... MWAHAHAHAAHAHAHAHAHAHAHAAHAHHAHA"