Senjutsu

refers to the user's chakra created from spiritual and physical energy within the shinobi as well as energy from nature. This results in the drastically increase of physical attacks and jutsu. It would seem that it stems from the toads, as only Jiraiya and Pa have been shown using them, and Gamakichi being the only one who is familiar with it. Other than Jiraiya, Naruto Uzumaki, who also possesses a large chakra reserve that enables the production of high amounts of chakra is the only other human capable of learning and using Senjutsu. Unfortunately, if the user puts too little chakra into using hermit techniques, the technique will not initiate and if the user puts too much chakra into the techniques, the user will start to turn into a frog. If a special scepter is not in tact during the transformation by a toad, the user will completely transform into a frog. Jiraiya, a legendary Sannin, had trouble using his sage form and he slightly turns into a frog. This involved his nose and hands and face changing to a more toad-like appearance. However, Naruto, who has just learnt how to sense sage chakra, only has dark rings around his eyes, other than that he looks completely normal. He is still able to use his sage chakra well, since he was able to lift a giant frog statue with his sage chakra.

Techniques

 * Hermit Mode
 * Hermit's Art: Hair Needle Barrage
 * Hermit's Art: Boiling Oil
 * Hermit's Art: Deep Fryer
 * Kaneshibari Genjutsu