The Orange Spark

is episode 246 of the Naruto: Shippūden anime.

Summary
Naruto's initial attack is ineffective against the beast but wasting no time he flips the beast over and launches a Rasenshuriken at it. He immediately tries to separate the Nine-Tails' chakra, but the beast's hatred and malice begins to fill him. While in the training chamber, B alerts Yamato who begins to attempt to suppress the Nine-Tails. As the hatred fills him he is reminded of the people that spurned him in his childhood but a small gentle voice rings out telling him that he could stay there. With that chains erupt from Naruto's body and restrain the Nine-Tails who recognises them as Kushina Uzumaki's. Within Naruto's mind a kind-faced woman with long, bright red hair appears before him who Naruto initially believes to be the Nine-Tails trying to deceive him. After Kushina punches and corrects him — realising who she is — an emotional Naruto greets his mother. With this, the two begin to talk and Kushina tells Naruto of her youth and how she fell in love with Minato Namikaze.

Trivia

 * The image of Naruto and his parents that appears after he gives his nickname is the cover of volume 53.
 * In this episode, the fact that Kushina migrated to Konohagakure is played on very heavily. She even stated that she didn't hold much hope to be rescued when kidnapped by Kumo-nin. However in the manga, this is not the case as she told Naruto that Konoha immediately sent out a search party to look for her.