With Only an F-Rank Talent, I Can Only Exploit Bugs in the System

In a world where everyone is trapped in an infinite-flow game, does an F-rank talent mean certain death? Chen Fan awakens the good-for-nothing talent [Exploit Observer], yet in his first dungeon, he spots a 0.3-second delay in the System's judgment! While everyone else goes toe-to-toe with the lesser demons, he steals kills by throwing rocks, exploiting loopholes in the rules to carve out a path to survival. The good-for-nothing's comeback begins by crashing the System with a bug!