When the anxiety of rent increase collides with an old mobile phone that gets hot, Yu's life is completely overturned - there is a strange red magatama hidden in the mobile phone, the bloody battlefield of ninjas is repeatedly played out in his dreams, and the eyes of his new boss Nara Hayabusa always seem to be coveting something on him.
A sudden countdown dragged him into the blood puzzle called "Uchiha". The old bookstore in Akihabara, the abandoned electrical repair shop, the bloody formation of Tokyo Tower... In the reinforced concrete room of the modern city, he came across the secrets of ninjas that had been sleeping for thousands of years: the truth about genocide, the curse of the Sharingan, and the reincarnation trap set by himself from the future.
The encounter with the mysterious woman Uchiha Rin makes Yu gradually understand that he is not only the last descendant of Uchiha, but also the key to breaking his fate. The pursuit of the eye alliance, the conspiracy of "adults", the legacy left by Shisui... When the three magatama spins in his pupils, when family affection and faith become sacrifices that must be given up, he finally understands that what the scarlet Sharingan reflects is never power, but the price of protection.
From the neon lights of convenience stores to the deep sea of Tokyo Bay, from ordinary social animals to warriors with awakened bloodlines, Yuu walks forward with the scar on his left eye. Behind him is the tampered history, and in front of him is the new life that needs to be protected. In this battle across time and space, every scar hides light, and every choice rewrites the future - it turns out that the so-called awakening is just that in despair, you still dare to believe in the weight of the word "family".
