3x3 Eyes

Yakumo Fuuji is a young man whose life takes a bizarre turn when he becomes the immortal servant of the last surviving member of a three-eyed immortal race. To save his life, she absorbs his soul, granting him immortality in the process. Bound together, they set out on a journey to find a way for Yakumo to become human again. But their path is far from simple-especially since his immortal companion has two distinct personalities: one sweet and endearing, the other ruthlessly powerful. As they travel, complicated feelings begin to grow between them, adding another layer of difficulty to their already impossible quest.