This essay analyzes a Japanese court’s criminal conviction of a Peruvian shipmaster for abusing Chinese contract workers and the subsequent release of all Chinese passengers except a lone girl. Using the case as a lens onto gender dynamics within the coolie trade to Latin America, I argue that overlapping patriarchal practices made Chinese contract labor overwhelming male and prioritized men in debates over freedom. The María Luz trials upheld women’s domestic sexual bondage while condemning men’s enslavement.