Nine-Tails Control Technique

The user of this technique focuses their on Kurama's eye, causing the Sharingan to manifest in the beast's eye, followed by the pupils dilating. From then on Kurama can be summoned and controlled by the user. , the Fourth Hokage, noted that this technique could not be maintained for very long; even though Madara Uchiha was capable of maintaining the technique far longer than Tobi. It can be undone by a Contract Seal.