Not Out of Luck!
After a short conversation between Aoshi and Shishio, they both engage in combat with each other. However, even with Aoshi's Kaiten Kenbu Rokuren, he cannot defeat Shishio. Suddenly, after buying enough time for Kenshin, Kenshin himself appears to be standing! Due to his swordsman spirit, he was able to survive the wounds caused by the Guren Kaina. Now round two commences. Just when Shishio is about to finish Kenshin off with another Guren Kaina, he remembers the promise he made to Kaoru to go back to Tokyo together. He then uses a five-hit combo on Shishio, and does the Ku Zu Ryu Sen, of the Hiten Mitsurugi Style. Shishio gets back up because of his swordsman spirit, and the final round is about to commence.
Aired 20/08/1997EP 59 - Not Out of Luck!

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)