I’m the Sole Returnee

120 million people have disappeared worldwide. [Final Quest Completion Reward ‘return’ begins] Yoon Sang-Hyuk cleared the worst survival game in 22 years for the first time.
The so-called strongest person among all the other players and corps has arrived.
As some who posses everything through all the rewards that no one else could earn. [Masked Monarch, Return] I am alone am on level 10 000, I am alone have complete items, I alone can be the one!