Ryūgan

Ryūgan
Ryūgan ( 竜眼 , Ryūgan),mysterious dojutsu awakened by Masashi and Ryū. During the activation of Ryūgan, the vertical lines on the face disappear on the user's face, in the eyes of the user appear vertical pupils.

Abilities
-Ryūgan lets you see the source of heat and see it in total warmth. - Ryūgan reduces the attacks of ninjutsu which are the nature of the chakra Ryūgana has, affinity nature does not cause any damage to Ryūgan user. For example, Ryū does not get any damage from techinques fire because it's his affinity nature.