Orient 21 (Weekly Shonen Magazine KC)

[Machine Translation] Musashi, who was defeated by Shiro, who ate his own heart and transformed into a deformed form, deepens his bond with Kojiro and challenges him to a final showdown! This is the latest work by Shinobu Otaka of "Magi" fame! The time is the Warring States period, a time when demons reign supreme. Two boys, Musashi and Kojiro, aim for the "most powerful warrior group"! Their dream is to "unite the world"! Win the heart of the world! A Japanese fantasy that no one has ever seen before begins! Shiro suddenly rebels and defeats Ichimasa in a battle against the five great generals. He offers his cooperation to Musashi in order to realize his ideal world, but negotiations break down when Musashi rejects his offer! The battle breaks out again! Musashi, clad in yellow and red sword ki at the same time, overwhelms Shiro at one point, but Shiro, having eaten his own heart and transformed into a different form, surpasses Musashi and Kojiro with his mighty power. ...... A true bond is put to the test! The curtain now rises on the final battle!

自身の心臓を喰らい、異形へと変貌を遂げた四郎に成す術なく敗れた武蔵は、小次郎との絆を深め、最終決戦に挑む！！『マギ』の大高忍、最新作！　時は戦国、鬼が覇権を握る時代──。二人の少年、武蔵と小次郎が目指すのは、「最強の武士団」！　夢は「天下統一」！　勝ち獲れ、世界のど真ん中！　誰も見たことがないジャパニーズ・ファンタジー、開幕！五傑将との戦いの中で、突如反旗を翻し、一眞佐を倒した四郎。己の理想郷の実現のため武蔵に協力を持ちかけるが、武蔵がそれを拒絶したことで交渉は決裂！ 再び戦闘が勃発する！！ 武蔵は黄色と赤、二色の刀気を同時に纏い、一度は四郎を圧倒するが、自身の心臓を喰らい、異形へと変貌を遂げた四郎はその強大な力で武蔵と小次郎を凌駕する……。試される真の絆！ 最終決戦の幕が今上がる！！