Chakuro and the other Marked children have freed the Unmarked from the Amonlogian dungeon, but their rescue mission is far from over. The people of the Mud Whale still need to get back to their island home, and the path to safety is blocked by imperial soldiers. Even worse, Orca is determined to secure Ouni in order to carry out his diabolical plans! -- 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

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

Chakuro, Suou and Shuan ventured to the battleship Karcharías to convince Orca to release Ouni and Lykos. But instead of rescuing their friends, they are now caught up in Orca’s plan to destroy the Mud Whale and all its residents! He claims this will unleash an apocalypse and overthrow the Nouses, creating a parallel world where humans will never again feel pain or sadness, but Chakuro and his friends aren’t interested in that kind of future. When words prove useless against Orca’s sophistry, will the team from the Mud Whale be forced into violence?! -- 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

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