The Vengeful

is episode 305 of the Naruto: Shippūden anime.

Summary
Naruto has contacted Shikaku,meanwhile,Shikamaru and the others used a strategy to break one of the rashomon gates. Shikamaru asks why they plan on revenge, even if they are just being used as tools of war, but they reveal that this is their reward for being loyal to Orochimaru.After a flashback,their curse mark becomes more powerful with their hatred. Shikamaru, however, uses this to his advantage and provokes them. Naruto then finds and breaks the barrier,saving them. After the sound four's souls are released,Kabuto claims that the information on the Reanimation jutsu's effect on the cursed seal was worth it.