InuYasha Movie 3: Tenka Hadou no Ken
English title: InuYasha the Movie 3: Swords of an Honorable Ruler
Japanese title: 映画 犬夜叉 天下覇道の剣
Alternative titles: Inu Yasha: Tenka Hadou no Ken, InuYasha: The Sword of the World Conquest, The Sword That Rules Over the Empires
Type: Movie
Source: Manga
Episodes: 1
Status: Finished Airing
Aired: Dec 20, 2003
Duration: 1 hr 38 min
Rating: PG-13 - Teens 13 or older
Studios: Sunrise
Producers: Kyoto Animation, Yomiuri Telecasting, Nippon Television Network, Shogakukan Productions
Licensors: VIZ Media
Genres: Action, Adventure, Fantasy, Romance
Themes: Historical, Mythology, Time Travel
Demographics: Shounen

Following Inu no Taishou's death, his swords Tenseiga and Tessaiga were passed on to his sons, Sesshoumaru and Inuyasha respectively. However, there exists one more blade. During a visit to his friend Kagome Higurashi in modern times, Inuyasha encounters Sounga—his father's third sword. Found by one of Kagome's ancestors inside the old well that connects the past to the future, Sounga has been kept for years as a treasured artifact at the Higurashi shrine. Nevertheless, it soon reveals itself to harbor an evil spirit with a terrible urge to kill. 

While struggling to subdue its calamitous nature, Inuyasha manages to bring Sounga back to the feudal era where he must confront his brother Sesshoumaru, who has always desired to possess it. But when they lose track of the sword during their fight, the siblings engage in a fervent competition to find it, still unaware of its secret and the legacy that Inu no Taishou has left for them.

[Written by MAL Rewrite]

InuYasha Movie 3: Tenka Hadou no Ken premiered between the release of the TV series' episodes 136 and 137. It is the first InuYasha media installment to present details of Inuyasha's birth and his father's death as well as to feature the latter's human form. In Japan, the DVD became available on August 27, 2004 and included a bonus audio CD with radio drama extracts. The English version was released by Viz Media on September 6, 2005, followed by a special edition on April 18, 2006. The latter included a lenticular card and the original soundtrack. Shogakukan issued two comic volumes of the film on July 16, 2004 and August 6, 2004, respectively.