Volume 6 is volume six of the Akame ga KILL! Zero series.
Though their comrades deal a blow to the Oarburgh Clan, Akame, Kurome, and Natala remain at the mercy of Madam Mera, leader of the Oarburgh assassins. While she has no sympathy to spare for Natala--or any man, for that matter--she offers her female captives a chance to learn the truth. Recognizing Akame's doubts, Mera takes her around the Empire to see the suffering of its people firsthand, but will Akame be willing to open her eyes...?