The erotic novelist Taeko is writing a morbid story of a family destroyed by incest, murder and abuse. Her assistant, Yuji, sets on a mission to uncover the reality of this story, but the reality might be too much to bear.
In 1604, Miyamoto Musashi attacked the Yoshioka family at their dojo and defeated master Seijūrō and his younger brother Denshichirō in two duels. To save their reputation, the Yoshioka family decides to fight back with all 100 family members and hire an additional 300 samurai. Now Musashi sets out to defeat all 400 enemies in his most famous battle.
A teenager is transported to a parallel world where everyone who shares his family name is being hunted down by the dictatorial government.
