A Killer Without Mercy
Kenshin finds Sawagejo Cho has kidnapped the child of Shakku's son in order to obtain Shakku's final work for himself. Kenshin is forced to choose between keeping his vow not to kill and saving the baby, deciding to save the child and draw the sword he has been given. However, just when it seems he has broken his vow and killed Cho, it is revealed that the sword he is holding is Shakku's final work, Shinuchi, a sakabato, and Cho is merely stunned. Kenshin then leaves to find his master, Hiko Seijuro, in order to learn the final technique of Hiten Misturugi-Ryu.
Aired 19/02/1997EP 40 - A Killer Without Mercy

Rurouni Kenshin
Himura Kenshin is a vagabond with a dark past and sunny disposition. Not a ronin but a rurouni, he was never a samurai, but an assassin of utmost skill in the Meiji restoration, who in the turning point of the war simply walked away. His travels lead him to Tokyo in the 11th year of the Meiji era, where he befriends a female Kendo master, a former thief, a brawler and a doctor all with their own secrets. Together they fight off the enemies surfacing from the dark past that Kenshin cannot escape.
(Source: Anime News Network)