So, for a shinobi to be classified as 'S-Rank', they must have a unique and very powerful skill set and most importantly, they must become a missing-nin. outside of his body, which stops him from using ninjutsu and genjutsu. S-rank is used to classify only the most dangerous and powerful missing nins because of their level of skill, exceptional skill set and usage of (ultra) rare techniques. Read Chapter 2 from the story S-Rank Naruto by ShiKira with 1409 reads. 'S-rank' is also a designation given to extremely powerful missing-nin, earning them a place in their village of origin's Bingo Book. Normally, S-rank isn't titled to Jōnin or Kage level ninjas. S-rank techniques are almost always unique to a single user, and as such are trademark abilities of that user.

Naruto used this multiple times, and followed up with his own version or 1000 Years of Pain. S-rank is usually used to classify techniques intended for highly experienced jōnin and Kage-level shinobi. » Uzumaki Naruto Clone Body Slam Appearance:Chapter 133 Used By: Uzumaki Naruto Type: Ninjutsu, Taijutsu Description: Using Kage Bunshin no Jutsu, its a combination technique used to crush the opponent, or throw the real body behind the enemy. Out of the six ranks, only the S-Rank is used to classify a shinobi's class. The ranks determine the difficulty or level of danger involved in the mission or technique mastering/usage. For eg: 'X is an A-rank technique' or 'Y is a B-rank mission'.

This task proved very difficult for Naruto, extensively requiring Tenzou's Bijuu control powers. The ranking classification is mainly used for techniques and missions. The Fourth intended to add his own elemental chakra into the highly developed spatial recomposition of the Rasengan to create a Rank S or even higher rank of difficulty jutsu.

Naruto s-rank ninjutsu