Humanity's Predator: My Little Sister Is the Strongest Creature

[Martial Arts] + [Ghouls] + [Raising a Younger Adoptive Sister]

Xu Ran develops anorexia, and a string of strange events unfolds while he is seeking treatment.

An artificial intelligence called "ECO-GPT" awakens in his mind.

GPT's initial access level is zero, and the only way to unlock its permissions is to prey on humans.

To survive and uncover the truth about this world, Xu Ran must become a qualified "human predator."