Bakumatsu Kikansetsu Irohanihoheto
English name: Intrigue in the Bakumatsu: Irohanihoheto
Genres: Action, Drama
Type: ONA, Episodes: 26
Aired: Oct 6, 2006 to Apr 6, 2007
Studio: Sunrise
Source: Original
Rating: PG-13 - Teens 13 or older
Synopsis:
In the final years of the Bakumatsu, wandering mercenary Yojiro Akizuki travels the length and breadth of Japan. And while he employs his sword in the usual fashion, he also uses it to help him locate supernatural items which he pursues with single-minded determination, often with bloody results. In the course of his quest, he crosses paths with a traveling theater group whose members have their own dark agenda. Is it a chance meeting or the result of some, as yet, undiscovered conspiracy? 

(Source: Sentai Filmworks)