I Became the Ultimate Boss IBTUB

Every time he goes to sleep, he will enter a game's Ultimate Boss' body.
He's the Sleeper of R'lyeh at the bottom of the ocean, the Great Old One in the game, the master of the dream that makes one fall into madness—Cthulhu!
Due to the rising of the game, more and more fanatics call upon His name. There will be a strange item at home every time Ke Meng wakes up. It's quite a trouble for an unboxing video creator like him...