Children of the Whales manga volume 11 features story and art by Abi Umeda.

Orca and his imperial troops have arrived at Amonlogia, and Chakuro and the other Marked hope to use the chaos as cover for a rescue operation. But as they attempt to breach the castle to save Suou and the Ummarked, Orca sets out on a diabolical mission of his own. Can Lykos keep her brother from causing more harm, even if it means killing him?