Written by Nobuhiro Watsuki, the popular Japanese series Rurouni Kenshin tells the story of Himura Kenshin's journey towards redemption. A former assassin, Kenshin becomes a wandering swordsman and vows to use his abilities to protect innocent civilians instead of hurting them. As the series begins in the Meiji Era, Kenshin meets many characters with exceptional combative skills and swordsmanship.
Source:https://www.cbr.com/rurouni-kenshin-strongest-characters-ranked/