As revealed in the Solo Leveling: Ragnarok web novel, actions once taken by the Absolute Being led Ashborn, a former Ruler, to become part Itarim. Notably so, his successor, Sung Jinwoo ...

The transformation of Sung Jin-woo from the world's weakest hunter to an unstoppable force in Solo Leveling depends on his interaction with a mysterious interface called "the System." The System ...