The Sharingan Revived: Dragon-Flame Jutsu!

After a protracted battle with the mysterious ninja posing as Shiore, Sasuke traps Shiore and uses the Dragon Flame technique to incinerate his attacker. However, Shiore is still alive with his face partially melted off, revealing part of Shiore's true face. After extending his neck to inflict Sasuke with an unidentified mark, the ninja introduces himself as Orochimaru. Burning the scroll he possessed, Orochimaru leaves while promising that Sasuke will look for him in the future. Anko eventually finds Orochimaru, revealed to be her former teacher, and unsuccessfully tries to kill him while learning that his target was Sasuke, and that any interference in the Chunin Exams to remove the youth from the proceedings would end terribly for the Hidden Leaf Village.