
If you're looking for manga similar to Tenka Hyakken: Sai, you might like these titles.
The start of a warring-age brought the appearance of mercenaries. In this time of treachery three men band together to fight. With speed like the wind they call themselves The Three Brothers of Tornado.This is the story of the unlikely journey of Hizoka the Storm, Hiryuu the Moon Shadow and Kogenta the Flying Squirrel, and the search for the truth of ones self.
When humans first discovered fire, it filled them with fear. As time passed, they mastered fire, and used it to melt iron and forge weapons. This taught them to build their power, make war and rule one another. Follow the journey of Akoya, a young woman protected by a mountain spirit, as she fights for survival in Japan long before the samurai came to rule.
Set just before World War II: Having honed his swordsmanship to a fine art, dashing young Kumomaru leaves his native Japan to see the world and test himself against the evil forces brewing an apocalyptic world war. His companions include a beautiful French woman and the as yet unknown writer Ernest Hemingway.
Having found a clue of his birth parents through his legendary Seven-Star Sword, Hikoza's journey continues to the northern land of Japan.
In a strange twist on Arthurian legend, young Art pulls the magical sword Excalibur out of a stone--only to find himself as one of a million Arthurs, fighting to defend the island of Britain from enemies and to earn the rank of the true king. Art is pretty puny, but his childhood friend Ligu (who was also chosen by an Excalibur) tries to keep him from being immediately killed. Soon Art lives in a castle with knights, which are created beings who serve the kings. From the respect with which he treats the knights, he inspires some to hope he becomes the true king. But is that really achievable by a scrawny crybaby like him?
A twelve year old boy from a lesser known school of swordsmanship is known to be an outstanding prodigy. A demonstration match with wooden swords is arranged for the local lord, and an instructor from a nearby school is called to be his opponent. The instructor, not taking the boy seriously at first, learns quickly that he should not take the boy for granted. Both of them settle into a serious fight with their pride as warriors on the line. The match is hard fought, but finally the boy wins, and sets in motion a cascade of unforeseen consequences.
From the mind that brought you "I'll" comes a story set in a unique world of samurai and man-slayers reminiscent of the Japan of old. One man wanders the land with a deep past, a deep secret, and a "merciful" right hand...
The continent of Yggdra is a place where humans, ogres, giants, forest sprites, and many more mythical creatures live. Led by the Holy King, the continent was at peace until one day, a mysterious group called the Black Army appeared and started conquering the land. In response, the Holy King and its troops fought against it, but Holy Capital fell and the Holy King was killed by the mysterious Black King. As the continent was in the glimpse of destruction, hope glimmered as one man, Yuri, the Hero, decided to fight back and formed the Volunteer Army to oppose the Black King and bring peace back to Yggdra