Reborn as an Immortal, I Have the Inheritance of the Sea of ​​Blood

When he was reborn as a young boy, he awakened to the supreme magic power. From then on, the giants of immortality were the withered bones under his feet, and the secrets of the ancient world were the playthings in his palms. In this life, I am the River Styx, redefining the order of the three realms!