Sarutobi, Sasuke

猿飛佐助

Sarutobi Sasuke is a young ninja and one of the three members of the Sanada Juuyuushi, appearing prominently throughout Samurai Deeper Kyo. He is only 12 years old, but despite his youth, he is highly skilled with a sword. Originally, he lived in Aokigahara (a forest filled with the failed constructs of the Mibu) with his friend Kotarou (now Makora of the Juunishinshou). Being of the Forest, he possesses heightened strength and abilities, as well as characteristic golden eyes. Sasuke was involved in most of Yukimura's plots, but was ultimately excluded from Yukimura's deception of the Mibu clan, as Yukimura needed even Sasuke to believe he had betrayed his friends in order for the Mibu to believe it as well.
Sasuke originally wielded a Muramasa blade which was physically identical to Kyo's Tenrou (one of the four masterpieces that Muramasa forged), but when that sword was cracked in a duel with Demon Eyes Kyo (a fight to determine who had the real Tenrou), he was given the Shibien - the oldest of Muramasa's Four Masterpieces. The Shibien blade, however, is exceptionally bloodthirsty, and its creator, Muramasa, had to have it bound in chains to prevent it from turning on anyone. Strangely enough, it serves Sasuke obediently. Sasuke seems to have control over Lightning techniques. Sasuke possesses a technique called Raikoken that electrifies his sword. Thunder Fire calls a bolt of lightning down to strike an enemy. Thunder Flower Storm brings many lightning bolts down around Sasuke and his enemy. Thunder Net traps Sasuke's enemies in a web of lightning which never lets go. Thunder Tail connects Sasuke's lightning to his sword, allowing him to kill an enemy with a physical strike. Sasuke's ultimate technique is Kirin, which creates a lightning-winged Pegasus that burns all it touches when it returns to heaven.
Also, it was seen in several of Sasuke's battles that he has the same red eyes as Kyo.