Rurouni Kenshin is a manga by Nobuhiro Watsuki. It is also known as Samurai X. The manga has sold more than 50 million and the anime remains popular.
Himura Kenshin is a peaceful wanderer – except he used to be the assassin known as Hitokiri Battosai. After the Bakumatsu war, Kenshin roams the countryside and offers protection and aid to those people who needs his help. This is an atonement for the murders he carried out as an assassin at war.