Kyo Kara Maoh! - Season 1 Episode 7 Runaway? Stray? Demon Sword in Motion!
Overview: With Morgif now in his possession, Yuri finds out that the sword needs to absorb souls for energy. Jozak tricks Yuri to participating in a gladiator event so he can absorb souls when people die. Yuri is forced into a colosseum fight to the death and when he reaches the field he finds out that his opponent is Rick, the apprentice from the ship they were on.