Kurama dosen't have a special trait though. All he has is raw power while the others have special traits.
Imagine Son Goku Chakra Mode... omg...![]()
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He started getting those forms when he developed the Torii Seal, and used that instead of the Eight Trigrams seal that his father original put on himWrong. The seal did the opposite of what you are saying. The seal always imprisoned Kuruma and restricted his powers (Ninjutsu). It's only when Naruto removed the seal and co-operated with Kuruma did he get those forms (Ninshuu).
The powers of Ninshuu surpass the powers of Ninjutsu.
Kurama's special traits are shown the most in comparison to any other bijuu. Surely you remember that Kurama can sense hostile intent aswell as being able to use fire and wind release.Kurama dosen't have a special trait though. All he has is raw power while the others have special traits.