Completing Where Loyalty Lies is the first big step in aligning yourself with a faction in Blood of Dawnwalker. Until now, you've likely been taking the fight to Brencis yourself, though maybe you decided to free Mert out of the goodness of your heart. But to join the Manumits, you'll have to prove your commitment to the cause by raising your infamy, a system you may not have interacted with much until now.