Infinite Worlds: We Are All Toys of the Grim Reaper

The protagonist, a young man in black robes, awakens in a vast, empty space with no memories of what came before. His long black hair reaches his waist as he floats in the void. His eyes gleam gray, his face is youthful, and his eerie aura and deathly stillness make him seem like a demon emerging from hell. The young man in black remembers only his name. Memories that don't belong to him keep resurfacing in his mind. One day, he will develop more of his own will and cease to be a mere tool of Hades, the God of Death. After gaining his own consciousness and personality, the young man in black begins to resist Hades. Which of the hunters will ultimately escape the God of Death's control? And who will manage to leave the Superstring Space? P.S. Unlike in mainstream novels, the young man in black, the protagonist, doesn't have the plot conveniently rigged in his favor like a chosen one.