Did anyone know, Solo Leveling dropped their newest comic, which takes the story to JinWoo's son and his ungraded system.
[This is not really a spoiler, but]> Not to say his son has only one goal, save his mother and go help his father so their family can be reunited.

This is a comic you should look up to if you like a good backstory, lore and mystery.
A child trained to be an assassin after losing his friends and only family, kills all who wronged him.