Uzu is the son of The World Healer (Mars, Mother) & The Soul Harvester (Dante, Father). After months of running away from The Kaiju, a group of warriors specifically crafted to hunt down The Book Of Life, Mars takes her own life to throw the bloodhounds off of her scent. The result is confirmed safety for Uzu & Dante until Uzu turns 16 & The Book Of Life attaches to his soul, allowing Uzu to open the book and learn all of his mother's deep and dark secrets if he so chooses.