Tensei Gyakugan

The is a powerful Dōjutsu Kekkei Mōra possessed by the former king of Ōtsutsuki, Ryūjin Ōtsutsuki of whom is the first and the only wielder of the eye. It is the original form of the Tenseigan.

Background
Back to year 54 BCM, Ryujin who has the power of the new level of the Byakugan known as the Gyakugan ate the other twin fruit of the Shinju. After he ate the fruit, his Gyakugan has manifested the chakra of Shinju in which has evolved the eye into a new form of Dōjutsu he called the 'Tensei Gyakugan'. This new Dojutsu has given Ryujin godly abilities in which has surpassed his sister's.

A year after the fallen of Kaguya Ōtsutsuki by the hand of her sons, Ryujin was argued by the Otsutsukis who accused him to have taken the power of the Shinju in which has led to the first Otsutsuki civil war. Though the obvious lack in numbers, Ryujin easily took control of the war by using the power of Tensei Gyakugan. The opposition led by Hamura Ōtsutsuki was forced retreat to Earth to gain support from his brother, Hagoromo Ōtsutsuki.