Only I Know Ghoul Saved World Novel Softcover Volume 01 (Mature)

While on her first foray into the Labyrinth, amateur adventurer Alice finds herself surrounded by ferocious beastmen. All seems lost, but she's saved by a young man named Leon, who claims to be a monster himself. Alice believes there's more to him than that, however. She thinks Leon might be exactly what this ruined world needs: a hero.