Lord of the Abyss

At eighteen, Kane, an F-rank boy from the slums, enters the Abyss to save his dying sister, Lily. Thirty thousand go in, and he is the only one who comes out alive. The Abyss Lord Vargos has hidden his power inside Kane and shrunk himself into a small black cat named Peanut, while the world outside brands Kane a deserter.

FantasySci-Fi & Cyberpunk