“I don't know who I am. Whose hands are these? Am I trapped in someone's body? No... I don't even know if I have a body of my own. Why am I existing? What is the purpose of my existence? I don't know anything besides existing. I'm aware that I have a mind... that's why I can say I am. But I have this feeling inside my chest that's telling me to act. For what? Why? The feelings don't tell exactly. I don't know why but my tears are pouring from my eyes. Why is this feeling tearing me up inside even I don't know what is it for? Stop it, please! I can't bear with this anymore! I'm gonna go crazy!! I don't know anything, yet I'm suffering. How could I make this stop? Kill myself? No, I'm too afraid to do that.”
Leonide has forgotten most of his past as he is being chased by a mysterious goddess. Yanmei tries her best to keep him safe.
Mila and the others sought to rescue him in her own domain: The Underworld.
Sayuri and her companions have arrived on Mars to satisfy her vengeance.
The members of the organization called the Nine Guardians have started moving. Their goal, unknown.
The God of Gravity part 4: Nine Guardians is the fourth book of the TGoG series. The story starts after Leo freed the Earth from the tyrannical rule of Xue. New factions have been created from the aftermath of Leo's war to stop her plan. In the process of exerting too much of his powers, he loses his memories.