The Abyss in the Palm of Your Hand

When you gaze into the abyss, the abyss gazes back. After having a nightmare, Wu Dun gradually realized something was wrong when he thought he was secretly proud of having an extra portable space. Is his personal space in an abyss? Is the portable space a broken plane that may be crushed by a passing boss at any time? Do you want it to be so exciting? Am I the weakest demon lord in history? Ps: Legion novel, if you don't like it, don't comment, thank you! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.