Hana finds herself facing unexpected challenges as a new leader in the Shogun's army, and Kenichi begins to make the perilous journey back to the island...alone.

After a mysterious attack wipes out the major cities of 19th century Japan, Korea, and China, survivors from all three lands find refuge on a hidden island and build a new society. Hana, the orphaned daughter of Korean peasants, and Kenichi, son of a great samurai leader, have little in common except for a mutual disdain for the other. But these young warriors will have to work together when an army invades the island with shocking news: there is...

Under threat from a mutated horde, the island is forced the cede control to General Sato-and Hana and Kenichi have a choice to make. Torn between protecting their home or standing against a threat to all of humanity, the two warriors find that their differences may divide them yet again.

Though the Island's shelter provides protection, Hana can no longer watch the slaughter on the mainland and leaves her home with General Sato to save the Shogunates's civilians. Kenichi reluctantly joins her, with his own motivations for the island's protection in mind.

After a mysterious attack wipes out the major cities of 19th century Japan, Korea, and China, survivors from all three lands find refuge on a hidden island and build a new society. Hana, the orphaned daughter of Korean peasants, and Kenichi, son of a great samurai leader, have little in common except for a mutual disdain for the other. But these young warriors will have to work together when an army invades the island with shocking news: there is...

The war for the Island rages on-but in the heat of battle, will neither side open their eyes to the true threat bearing down on them, in the form of the Byōnin?

Denied re-entry to the island, and with the combined forces of the Shogun and the bandits closing in, Hana and Kenichi prepare for the battle of their lives.

Hana and Kenichi finally return to the island seeking refuge, but are denied entry by Elder Jin and the Islanders who fear the newly mutated byōnin. Caught between the Island's defenses, the Shogun's oncoming forces, and the deadly new monsters, Hana and Kenichi must rally their own troops and make one final stand to protect the homeland that has abandoned them, in order to preserve the ideals they know are right and fight for the future they want....