Karasu Tengu Kabuto

Kabuto is a tengu who has to save a princess from fortress which is full of monster-mecha hybrids in an alternate reality of feudal Japan.

Young Chihiro spends his days training under his famous swordsmith father. One day he hopes to become a great sword-maker himself. The goofy father and the serious son--they thought these days would last forever. But suddenly, tragedy strikes. A dark day soaked in blood. Chihiro and his blade now live only for revenge.

A young boy named Jiro finds his mother and sister murdered in his home. Falsely accused of the crime, he flees from his village and meets a priest named Tenkai, who has him kill a rogue ninja named Tarouza. After fulfilling that task, Jiro undergoes training to become a master assassin. Many years later, Jiro finds out that he was an orphan and his real father was Tarouza, who had worked for Tenkai until he aborted his mission when he fell in love with an Ainu woman. The young ninja discovers that the Shogunate was to retrieve the lost treasure of Captain Kidd and use it to once again isolate Japan from the rest of the world. Using the clues that Tarouza had kept secret, Jiro - along with the female ninja Oyuki and a slave named Sam - travels to Russia and America to search for the treasure in hopes of using it to extract revenge from Tenkai.

It is the time of civil war. Zipangu is a country where people live together with gimmick warriors, a kind of super human robot. There, people and gimmick warriors struggle to seize power. Musashi, a Samurai gimmick warrior, departs to on a quest to become the best Samurai warrior. Musashi thrives in the series of battles, encountering with many heroes and villains including his lifelong rival, Kojiro, an expert swordsman. Later, Mushashi and Kojiro are sent by their General to escort the Princess, a granddaughter of the general. The princess is spoiled and difficult, so their journey becomes series of misadventures. Soon, they are caught up in a battle to seize control of the Country.