Yeongung Ppopgineun Sinjunghage

Stuck in a game with a lousy hero? Me too!
Min-Jun, a normal office worker, wakes up inside the game he was reviewing for his friend. It's not his fault the trailer was so boring it put him to sleep! Bewildered, Min-Jun is tasked with summoning a hero to guide. The hero certainly looks strong, but he seems to be less useful than expected.
(Source: Manta, edited)