Ranmaru

Ranmaru is a young boy from the Land of Lightning who possesses a rare dōjutsu. His eyes have an unusual red glow and allow him to perceive chakra, see through obstacles, create illusions, and extend his perception far beyond ordinary sight. His abilities can even interfere with the Byakugan, making him a valuable and potentially dangerous resource to anyone who understands their potential. So, the Hidden Leaf decided to keep his as valuable asset.