InuYasha the Movie 3: Swords of an Honorable Ruler (Sub)
AKA: Inu Yasha: Swords of an Honorable Ruler InuYasha: Tenka Hadou no Ken Inu Yasha: Tenka Hadou no Ken InuYasha: Swords of an Honorable Ruler InuYasha: The Sword of the World Conquest The Sword That Rules Over the Empires 犬夜叉 天下覇道の剣
Plot Summary: Izayoi and Inu no Taishou, Inuyasha's parents, are having problems with a human named Setsuna no Takemaru. Sou'unga a magical sword that has been sealed away for 700 years is found. Now everyone is after the sword and its powers but it seems the sword has something else in mind.