In the manga and anime series "Rurouni Kenshin," the protagonist, Himura Kenshin, wields a reverse-blade sword, also known as a sakabatou. The reverse blade sword has its cutting edge on the inward-facing side, opposite to the traditional katana.

Kenshin's use of a reverse-blade sword reflects his personal philosophy and his desire to atone for his violent past as an assassin. Kenshin, once known as the fearsome Hitokiri Battousai, has vowed to never kill again and seeks to protect and uphold justice instead.

By wielding a reverse-blade sword, Kenshin can engage in combat without the intention to lethally harm or kill his opponents. The dull edge of the reverse blade limits the severity of his strikes, allowing him to disable or incapacitate adversaries without causing fatal wounds.

Kenshin's choice to use a reverse-blade sword symbolizes his commitment to non-lethal methods, redemption, and his determination to protect and bring about positive change in the world. It serves as a reminder of his past and his ongoing quest for atonement and a peaceful life.