In ancient Japan, during the Sengoku period, around the 16th century (1543), there was a war between two clans which were the "Matsuda-Shi/Sōngtián-Shìzú (Matsuda-Clan)" and "Takagi-Shi/Gāomù-Shìzú (Takagi-Clan)". Then the group-captain from the Matsuda clan chose to chase their enemies as they thought their fighting morale was sky high, so this is the chance for them to eradicate their enemies. When passing through a corridor surrounded by hills on the left and right sides, suddenly from the both hills side, the arrows showered down at them. It was the other Takagi clan troopers. The group troopers from the Matsuda clan just noticed that they were ambushed, just like the vice-captain said earlier. And for both of them who were duel earlier, also down as no one wins the battle. It seems like the young samurai has managed to take down the enemy captain before he was attacked by the enemy's side. Suddenly, the young samurai starts moving as he is still alive and also the captain from the enemy group. So the young samurai tried to reach his katana sword slowly which lay down on the ground. However, something happened when they swords met. A lightning strike in between them until they blackout. When he woke up he was time-travel to 400 years ago.

the riot team started the war against the government and also the British side. One day, they heard the rumor that 3 days from now, a British merchant vessel will arrive at Yokohama port. It said the vessel was transporting the British military weapons to Japan, again. Surely, the riot team there was so furious after they heard that. They're planning to hijack the vessel and destroy the demon weapons. When at the bottom layer of the vessel, they entered into a room that was located in the center of the edge of the vessel. However, they were amazed as they found nothing there. just a coffin. What will happen next? An d what is inside the coffin?

Since the day Towa brought that child to shelter in Unkensō, he lay low and lived in peace behind the hill of Unkensō, together with the child that he adopted and took him as his disciple; like Chō-bun did. That child name "Kanō-Koshin / Yè-Gǔxìn". For Towa, he also returned to his old name that was given by his Shishō, Chō-bun, which is "Kōgo / Gāngwú". After Chō-bun died and for some reason, he didn't use that name anymore, until now. Since he had already retired from the pugilist world and the toxin inside his body still not yet clear until now, he was trying to nostalgic the old times before one day he suddenly left this world.

To bring down En-Koku, Ki-Koku recruited some martial arts practitioners from the pugilistic world to help them. Among them, there is one young man who has great martial arts that is quite famous and recognized by the pugilistic world. He has no name, a mercenary. People called him,"Hitokiri-Kenshi / Shāshǒu-Jiànshì (Assassin-Swordsman) as he has no name. since then, his journey started as a mercenary killer and also to find out the murderers of his master, he's traveling around the pugilist world to seek for revenge. Can he make it or he end up in the hands of his master enemies?