Only I Know the Ghoul Saved the World Light Novel vol 01 tp

Written by Myojin Katou
Art by Kasu Komeshiro
Cover by Kasu Komeshiro

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.