Target: Nine-Tails (狙われた九尾, Nerawareta Kyūbi) is episode 247 of the Naruto: Shippūden anime.
Naruto defeats the Nine-Tails and manages to extract its chakra. Kushina reveals to Naruto that she became the Nine-Tails' jinchūriki. She also revealed her origin from Uzushiogakure, which was highly recognised for its powerful fūinjutsu and close ally of Konohagakure. As Kushina gave birth to Naruto, a mysterious masked man silently attacked ANBU ninja and infiltrated the venue.
When the chakra chain trips Kurama, you can see that there are ten tails.