Rurouni Kenshin: Meiji Kenkaku Roman-tan - Ishin Gekitou-hen

Sinopsis en inglés

Kenshin Himura was an assassin for the Imperial side during the war that ended the Shogunate and installed the Meiji government. After killing countless people, he made a vow to never kill again. Ten years later, he finds a home at a failing dojo, only to be caught up in a string of murders related to an opium ring. His commitment to never taking a life is put to the test as the people he's come to care about are threatened by figures from his past.