In this postapocalyptic fantasy, a sea of sand swallows everything but the past. In an endless sea of sand drifts the Mud Whale, a floating island city of clay and magic. In its chambers a small community clings to survival, cut off from its own history by the shadows of the past. 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?

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!

In this postapocalyptic fantasy, a sea of sand swallows everything but the past. In an endless sea of sand drifts the Mud Whale, a floating island city of clay and magic. In its chambers a small community clings to survival, cut off from its own history by the shadows of the past. Orca has captured Ouni and Lykos, and seems to have no further interest in Amonlogia or the Mud Whale. But the chaos he left behind continues to reverberate as Rochalízo is forced to make a critical choice and Suou must face the true burden of leadership. Meanwhile, the eyes of the mysterious Emperor have turned toward this far-flung battle on the sands, and his attention does not bode well for anyone.

In this postapocalyptic fantasy, a sea of sand swallows everything but the past. In an endless sea of sand drifts the Mud Whale, a floating island city of clay and magic. In its chambers a small community clings to survival, cut off from its own history by the shadows of the past. Lykos and Ouni have been captured by Orca, but instead of organizing a rescue, Suou has ordered the Mud Whale to set sail for their new homeland. Chakuro won't just abandon his friends, though, and he's determined to find a way to save them. But Orca has just declared independence from the empire, and any rescue attempt will end up right in the middle of his cataclysmic plans!

In an endless sea of sand drifts the Mud Whale, a floating island city of clay and magic. In its chambers a small community clings to survival, cut off from its own history by the shadows of the past. Chakuro, Suou and Shuan ventured the battleship Karcharías, hoping 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 in order to unleash an apocalypse that will overthrow the Nouses and create a parallel world where humans will never again feel pain or sadness. When words prove useless against Orca’s sophistry, will the team from the Mud Whale be forced into violence?!

In an endless sea of sand drifts the Mud Whale, a floating island city of clay and magic. In its chambers a small community clings to survival, cut off from its own history by the shadows of the past. 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?!

チャクロたちを襲う戦艦イェレアスから放たれた謎の捕食者。次々と泥クジラの民たちが魂形人間にされていく中、オウニとシュアンまでもが呑み込まれてしまう。そこでシュアンはオウニに16年前の記憶を語り始め…?

戦艦イェラキから放たれた謎の捕食者が、次々と泥クジラの民たちを魂形人間に変えていく。そんな中、チャクロたちは、オルカ提案の「戦艦カルハリアスをイェラキに激突させる作戦」を選択したが…!?

戦艦イェラキを撃退し危機を脱した泥クジラは、再び砂の海をさすらった果てに魂形が地上に降りそそいだ最初の地といわれるキヴォトスへとたどり着く。その地で印(シルシ)が命を吸われぬ生活への希望をみたチャクロたちは、キヴォトスの人々との交流を始めるが…!?　一方、魂形アンスロポスを帝国の大地から引きはがした皇帝陛下は、同じくキヴォトスを目指し始めて…!?

In an endless sea of sand drifts the Mud Whale, a floating island city of clay and magic. In its chambers a small community clings to survival, cut off from its own history by the shadows of the past. The emperor and the great Nous Ánthropos have arrived on the shores of Kívotos! Chakuro tries to stand against the emperor and his terrible plan, but the show of resistance only gets him and Lykos pulled to the bottom of the Sea of Sand. Everyone knows that nothing survives sinking under the sands, but death isn’t what awaits them in them depths—it’s knowledge.

世界を包もうとする厄災〝沙洗浄(カタクリュスモス)〟は、君が望んだことだとチャクロに告げた皇帝陛下。 過去の〝記録〟から紐解かれる記録者とスキアの関係に、その真意が隠されているようだが!? 皇帝陛下は、チャクロと泥クジラの民たち、そしてキヴォトスの地に何を求めているのか…今まさに真の目的が明らかになる!!

In an endless sea of sand drifts the Mud Whale, a floating island city of clay and magic. In its chambers a small community clings to survival, cut off from its own history by the shadows of the past. The people of the Mud Whale and Kivotós are all that stand between the world and certain destruction. But even with their combined strengths, are they enough to stop a monster driven by madness and caprice? Or will they all drown in the crashing waves of a Kataklysmós unleashed?

決死の覚悟でサナタスをハシタの谷へと誘導する民たち。 しかし、スキアをその身に取り込んだリョダリの力はあまりにも強大で…。 かくしてついに引き起こされた沙洗浄、迫る終末の時を前に彼らは…!? 爆発的人気を誇る少年少女決死の砂漠戦記、ついにフィナーレ!!