So, first thing that popped into my head, "Wolves mate for life, right?". I am already ready to worship at this woman's feet. Who needs a lawful life? I know there's a catch and when things get bad, they'll be baaaad. But hey, humans are adaptable. And life will certainly not be boring anymore.
Adding to my thoughts. If this os chosen, I'd love a reluctant MC who joins cause they know they have no other options, but is determined to keep their morals. They truly believe they'll stay "good", or even be able to influence things for the better. But through little actions here and there they're slowly "corrupted" and excusing things they or others do. That killing didn't count. They fell down the stairs... Making these drugs isn't really do terrible, we make sure they're not going to the working poor like the Government... etc