Habitation Module 4 is the module that is held almost entirely by mercenary forces working for Kayurata. It has the highest concentration of enslaved residents of Acionna's Sorrow with almost two hundred percent overpopulation. Rebel forces often dare not fight in Module 4 for fear of high collateral, but instead sneak in supplies through the dock that is permanently flooded due to mercenary forces attacking rebel submersibles outside and destroying a section of bulkhead.
