Willful Steel Scales

"Alive, seemingly another force generated within his being, he is naturally unable to be harmed. He can fight and fight all day, without worrying about protecting himself, because his metal does that for him. A perfect defense. In status, wealth and abilities, he truly is untouchable"

Since his awakening, Sannoto found that metal armor formed around him almost instantaneously whenever something threatened his physical state, without actual thought. Whenever in immediate danger, the metal would surround his body, his flesh and protect him from any outside threat. This armor seemingly moved on its own, for Sannoto never conjured it, especially considering the metal that would surround him was unknown to the man;its makeup a mystery. For this reason, it would be impossible for the Senju to even subconsciously act on it, because without the secrets to the metals makeup, he cannot produce it and the armor cannot be formed.

Eventually, the reasoning behind this unique armor proved to be Tai, Sannoto's true companion and permanent partner. By causing a fluctuation in their energies, the energy would exit the Senju's body through the pores and transform the layer of air molecules placed right above the flesh into this mysterious metal. Inevitably the name of the metal was revealed, for one identified it after seeing it form, it's properties and the incredible durability of the metal. Steel was the metal, for it possessed a dark grey color and was more durable than the hardest iron.

While the armor normally appeared in the form of an exoskeleton, Tai does usually have a secondary defense if this one should fail. While releasing energy through the pores, the metallic chakra would leak on the flesh itself as well in the air, thus the hexagram would use the chakra to literally transform the flesh into metal as well, containing an exoskeleton that protects his metallic skin from damage and then metallic skin that protects his body from damage. Once the immediate threat it disposed off, Tai causes the exoskeleton to fall off, along with the metallic skin. In doing so, once the flesh is disposed off Tai accelerates the healing factor and allows another layer of flesh to takes it place. Normally, this defense mechanism appears only in the area of the body that the enemy is targeting, thus much chakra is not used and the flesh needing replacement is small, thus the healing factor isn't accelerated too much.

To a certain degree, Sannoto possesses the potential to mildly control this armor, but to an extremely limited degree. Sannoto cannot deactivate this ability, thus self wounds are normally impossible without the approval of Tai, for he is the only one with the authority to stop this armor from forming, considering that this phantom is the one responsible. However, he can use his metallic chakra to increase or decrease the strength of the steel, especially in certain places such as the joints, allowing him to move while staying protected. The instantaneous formation of this metal is what makes Sannoto formidable foe, as since he does not require the focus to do this, he can concentrate on offense, while staying protected indefinitely.