The battle for the Mud Whale becomes a deadly rout as the Marked fight to protect their home and their comrades from the invading apátheia soldiers. Meanwhile, Chakuro and the rest of the boarding party have made it safely onto the imperial battleship Skyros, but their mission turns bloody when they reach the thymia-proof chamber at the heart of the ship. How will they destroy the enemy Nous and save the Mud Whale without access to their powers? -- VIZ Media

It is year 93 of the Sand Exile, but the implications of that calendar are only now sinking in for Chakuro. Imperial soldiers from the Allied Empire have appeared out of nowhere with orders to kill all the “criminals” of the Mud Whale! The Committee of Elders knows why this is happening but still won’t explain it to the young Marked of the island. And the elders would rather see the Mud Whale sink forever to the bottom of the Sea of Sand than leave them all at the mercy of the empire. -- VIZ Media

Chakuro is the archivist for the Mud Whale, diligently chronicling the lives and deaths of his people. As one of the short-lived thymia wielders, he knows his time is limited and is determined to leave a better record than his predecessors. But the steady pace of their isolated existence on the Mud Whale is abruptly shattered when a scouting party discovers a mysterious young girl who seems to know more about their home than they do... -- VIZ Media

The Mud Whale is in dire trouble. In four days, the imperial apátheia soldiers will return to destroy it and its inhabitants. But the Committee of Elders would rather kill everyone on board than wait for the “mercy” of the empire, and the fighters of the island will do the elders’ bidding without a second thought. Now Chakuro and the other children are forced by circumstance to rebel against the adults in order to save their home and their lives. -- VIZ Media

The people of the Mud Whale have been trapped on the floating island since their ancestors were exiled to the Sea of Sand nearly a hundred years ago, yet their prison has mostly felt like a home. But now the true extent of the punishment inflicted on the criminals of Fálaina has come to light, and the cost exacted by their home is immense. -- VIZ Media

The people of the Mud Whale have fought off the forces of the Allied Empire—for now—but their only hope for continued survival is to find an ally from beyond the Sea of Sand. So when the bombastic Sir Rochalízo sails his ship alongside their island, Mayor Suou is ready and eager to befriend the stranger. But even if Rochalízo can offer asylum, they have no way to navigate their island. Until the mysterious Aíma begins unlocking the Mud Whale’s secrets for Chakuro... -- VIZ Media

The promised land of Amonlogia has turned out to be a nightmare for the people of the Mud Whale. Suou and the Unmarked are being held hostage, and in order to save them Ouni and Chakuro agree to become captive soldiers for the duke. A battle is inevitable as Orca’s forces draw ever closer, but the duke has a far darker mission in mind for Ouni—one that will rock the very foundations of Amonlogia! -- VIZ Media