Ryuseiu

Ryuseiu (劉生; Ryuseiu) is the name of a young man (occupation is unknown due to bizarre arsenal of techniques) that originally emerged from the Land of Forests. At some point during Enishi Musashi's Templar training, he encountered Ryuseiu. Enishi, who believed Ryuseiu was a wandering ronin like himself, soon discovered that Ryuseiu was not a samurai or anything he'd seen before. Ryuseiu himself stated that "[he was] of the youngest generation of [his] kind". Ryuseiu also referred to himself as the "ultimate warrior". During his brief skirmish with Enishi, the latter came to the conclusion that Ryuseiu was a sort of hybrid warrior; heralding both the disciplines of the samurai and the techniques of the shinobi.