Intrigue in the Bakumatsu - Irohanihoheto

is a Japanese Original net animationseries, created by Ryōsuke Takahashi and Sunrise. It was broadcast between October 6, 2006, and April 6, 2007 on the Japanese Internet streaming channel, GyaO, and is licensed by Sentai Filmworks in North America.

Plot
The Bakumatsu era, where Japan's Shogunate being in its final years. Yojiro Akizuki is a dark and mysterious mercenary and bearer of the legendary Moon Tear Sword, which drives its holder instinctively towards whatever supernatural destination its ornament hilt detects. He comes across a travelling theatre group who is out for revenge for the killing of the parents of the group's leader, and whose mysterious playwright likes to secretly help along events of history. Yojiro joins them to lend them his skill against their enemies, while dark conspiracy continues to follow behind him.