The Second Genetic Modification

These Three-Tomoe Sharingan had originally been nothing more than ordinary Sharingan, but they had remained in Uchiha Madara's eye sockets for many years. Although Madara had transplanted his Rinnegan into Nagato more than twenty years ago, his level was what it was. The high-quality Yin Release Chakra that had originally supplied the Rinnegan was now supplying these Three-Tomoe Sharingan. As a result, while they had not advanced into Mangekyō Sharingan, their ocular power still far surpassed that of ordinary Three-Tomoe Sharingan.