Greg Pak 
Ronin Island Vol. 1 [PDF ebook] 

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 a new Shogun and the Island is expected to pay fealty in exchange for protection from a new enemy…a mutated horde that threatens to wipe out all humanity. Written by bestselling author Greg Pak (Mech Cadet Yu, Totally Awesome Hulk) and beautifully illustrated by Giannis Milonogiannis (Old City Blues, Prophet), Ronin Island Volume One explores an idealistic coming-of-age story set against the backdrop of a morally gray time of war where the reasons for fighting are questioned at every turn. Collects issues 1-4.