The Last Samurai public and asks him to commit Seppuku to redeem his honor. Algren refuses Omura's offer to lead the new army to crush the rebels. Omura sends assassins to kill Algren, but Algren kills them. Algren assists the Samurai in freeing Katsumoto; in the process, Katsumoto's son Nobutada is mortally wounded, and he sacrifices himself to allow the others to escape. As the Imperial Army marches to crush the rebellion, a grieving Katsumoto contemplates Seppuku, but Algren convinces him to fight until the end, and joins the Samurai in battle. The Samurai use the Imperial Army's overconfidence to lure them into
Samurai Warriors 4 death that leads to the Battle of Sekigahara and the extermination of the Toyotomi clan; and the "Sanada" story, which tells a parallel story with Unification but has a more personal insight with the Sanada clan. Musou Attacks now have new finishing animations separate from their Ultimate Musou, but they no longer allow free-action for their durations. Enemy generals still use the older shockwave finishers, and are no longer fully invincible for their durations (they instead are granted Hyper Armor). Like previous games in the series, the setting and story of "Samurai Warriors 4" is centered on the Sengoku period