Naruto: Shippūden (2007)

S20E486 Sasuke's Story, Sunrise, Part 3: Fūshin

Orochimaru takes Sasuke to the Coliseum's fighting arena to draw out En Oyashiro, who might hold crucial details about the Exploding Human incident. Just as the match is about to begin, it gets interrupted by the sudden appearance of more Exploding Humans, causing the chance to encounter Oyashiro to slip away. Nevertheless, captivated by Sasuke's Sharingan, Oyashiro decides to approach him directly.