The time is the end of the Warring States period. In this chaotic world, there is a war to decide the final winner, that is, later became the "Battle of Sekigahara" big showdown, hissing and killing sound like thunder like intertwined roar, the sky blood rain, countless lives disappeared... Among them, to the sword as the meaning of survival of the swordsmen, do not care about the development of the war situation, just to improve their skills, and live in the world of the sword, and finally to fight. In order to improve their skills, they lived in the world of swords and ended up fighting. Among the great swordsmen who disappeared during that period of history, there was one who was recognized as "invincible."......

Kyoshiro and Yuki, who met somewhere, started traveling. However, Kyoshiro has another character, the ruthless, strongest and toughest samurai, Berserk. During the time when the two are fighting for the dominance of "KYO", a group of people who have met Red Tiger, Yukimura and others are traveling to the west through Edo. Their destination was the Aokigahara Sea of Trees at the foot of Mount Fuji, where the sealed body of Madoka was hidden. However, Oda Nobunaga, the Sixth Heavenly Demon King, and his subordinates, the Twelve Divine Generals, who were also targeting Madoka's body, appeared. A blood-on-blood death match ensued, and although Mad was victorious for a time, he was too late to retrieve the body.

Banzamaru, one of the Four Holy Heavens, appeared before Mad and his party, who were tracking Akira, and guided them to Muramasa, Mad's master. Here, Madoka and Tatsuhiko, an assassin of the Imsei, who wants to kill himself and Muramasa, fight to the death. As a result, Yukari is given the Nonsense technique by Tatsuhiko, which will kill her after 60 days. In order to save Yumi, Madoka starts practicing the Mukoumei Kamikaze Ryu. Later, a new assassin, Hotaru of the Four Sacred Heavens, or the Five Observables, Hotaru Bewilderment, appears along with Sageko and Sagesei, shortening Yuki's life span! With Yuki in tow, Mad, along with Brahma Maru and Akira, break into the Land of the Nonsense. Mad and Hotaru fight to the death in front of the first "Five Observations Gate", where Hotaru is defeated by Mad's Mukoumei Kamikaze technique, "Vermilion Bird", and returns to Mad's side. Afterwards, Akira defeats Sesshoumaru and Sesshouko of the second Five Observations Gate, Mad defeats Jinmei of the third Five Observations Gate, and Red Tiger defeats Taibai of the fourth Five Observations Gate after joining up with Mad, and learns that Night is the only one who can defeat him. After meeting up with Mad, Red Tiger defeats Taibai of the fourth "Five Observations Gate" and learns that Yuki and her brother are not really siblings, and that the real sister is Sakuya. In the final battle with Tatsuhiko, who is the fifth member of the "Five Observations Sect", Madoka defeats Tatsuhiko in a "life and death" battle and removes the "water dragon" from Yuki. Afterwards, the last of the Four Saints, Orange, appears and heals everyone's injuries. Now in front of them are the four gates connecting the Yin-Yang Temple, and on the other side of the gates awaits them not only the real Twelve Gods, but also a more brutal battle than ever before. ......