Atsuyoshi Miyazaki

A yakuza boss hires Goemon Ishikawa, a modern day samurai, to protect him aboard his cruise ship casino. Everything goes sideways when the famous thief, Lupin the Third, tries to rob the vessel. Lupin's being hunted by a powerful and mysterious man: the so called “Ghost of Bermuda.” With Goemon's employer dead in the ensuing chaos, his honor is at stake, and the only way to preserve it is with blood. But this opponent is like no other, and to make things right, Goemon may need to sharpen not only his sword, but himself as well!

In a world consisting of numerous isles, a young hero from the Astora Isle encounters the adventurer Kyle and follows him on an expedition on the isle. They meet a mysterious girl named Iris and a talking white cat, and together they make their way to the isle's ruins, where they find a flying island. Kyle becomes consumed by darkness there, and the party resolves to travel to the ends of the world on the flying island in order to find the seven "Great Runes", following Kyle's words before he disappeared.