It is the year 203X, and Junwoo is a pro at "Over the Fantasy," a virtual reality game. One of his secret strategies is to keep an alternate character for extra inventory space to store his main characters' shiny items. But one unlucky day, a server error traps him inside the game—and as Dio, the classless alternate character! The situation seems dire, but he has an inventory teeming with SSS-class items to help him survive in this fantasy world. They should be enough to keep him going... Right? 3w4y6v
Original Novel:
KakaoPage
70 Chapters (Complete)
S1: 40 Chapters (1~40)
S2: 30 Chapters (41~70)

The summary, title, even the cover made me think it will be something like protagonist puling out random items from his inventory and solve the quests, which could've made it unique and funny but it's nothing like that, it's a generic VR RPG type manhwa.
Characters are bland. Storyline is pretty boring and predictable. Within 20 chapters whole plot of the series becomes "exposed".
The whole story feels like amalgam of handful of popular tiles with similar themes.