I'm Not a Human Being in a Mental Hospital

Linde accidentally traveled to an abandoned mental hospital at the end of the world and awakened his heaven-defying talent of [Nothingness]. From then on, everything in the world and all mutated monsters were unable to sense his existence! He secretly slaps the mutated demon bear and plays tricks on the crazy demon hound. While others are in desperate situations and clinging to life, he makes trouble all the time, focusing on a wicked and unworthy person! I thought I was the only living person left in the ruins, but in a dark corner, I bumped into a second hidden survivor. When people having fun uncover the ultimate truth buried in this doomsday ruins, their carefree days are completely reversed!