The 13th year of the Tenshou Era (1573.7.28 - 1592.12.8), young "One-Eyed Dragon" Date Masamune is the head of the powerful Date family. Masamune is very vain, self-centered, and reckless, and has started attacking and conquering all of the regions around his lands. The purpose of his campaign appears to be the acquisition of the treasures these nations possess. Katakura Kojuro, his trusted retainer and friend, does his best to keep Masamune from getting himself killed by his rash and dangerous plans.

The head of the ninja serving the Sanada house during the Battle of Nagashino Sarutobi Sasuke has been entrusted with an unpleasant task. He is the guard for Sanada Masayuki's second son Sanada Yukimura. Yukimura is a selfish conceited and insolent child and Sasuke despises him from the start. But as they spend time together and Sasuke foils various assassination attempts the two of them may find themselves becoming unexpected friends...