Ronin Island. Volume one, Together in strength / written by Greg Pak ; illustrated by Giannis Milonogiannis ; colored by Irma Kniivila ; letterered by Simon Bowland.

"Originally published in single magazine form as Ronin Island #1-4" -- Title page verso.

After a mysterious attack devastates a great swath 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 farmers, 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: the Shogun has returned and the Island is expected to pay fealty in exchange for protection from a new threat - a mutated horde that threatens to wipe out all humanity. Ronin Island explores an idealistic coming-of-age story against the backdrop of a morally grey time of war where the reasons for fighting are questioned at every turn.

13+ years.