The Tenseigan is a powerful ocular ability in the anime and manga series Naruto, specifically associated with the Ōtsutsuki clan. It is known for granting its user enhanced visual perception, the ability to see chakra, and advanced techniques such as flight and powerful energy attacks. The Tenseigan is typically awakened through a combination of the Byakugan and the chakra of a Ōtsutsuki. To achieve the Tenseigan, a user must possess the Byakugan and undergo specific conditions, often involving the Otsutsuki bloodline. This ability is prominently featured in the story of Toneri Ōtsutsuki, who uses it to pursue his goals and confront the main characters, including Naruto Uzumaki and Hinata Hyuga.