If you're looking for manga similar to Blade Sangokushi, you might like these titles.
Shio is forced by the tragedy of the machine war to team up with a mysterious girl from another world whose blood is the color red, just like the prophecies proclaim. Is this girl the human race's last hope for survival in a world overrun by metal?
Seven warriors, including Hoshi Hikaru, protect the earth from alien attacks. Their special move is Miracle Nova!
Strider Hiryu was the youngest Strider to ever reach the rank of "Super-A" grade. He was the greatest Strider the organization has ever produced, but he eventually grew disenchanted with them and retired. An uncollected prologue tells how Hiryu had been forced to kill his sister, Maria, who had inexplicably gone insane. He left the Striders for Mongolia, where he lived in seclusion for some years.
Namiro Itsuki is a giant of a young man whose huge stature has earned him the nickname "Baron." His peaceful everyday life is thrown into disarray when a flying saucer suddenly appears before him and his friend Yoko. As the two try meet with various odd encounters, could it be that the UFO is the one tying all these events together?