I recommend the two novels,"Legend of Online Games" and "The Great Master of Go." The protagonist of "Legend of Online Games" came to a mysterious challenge space, completed missions, leveled up, and ruled the entire world. The protagonist was also particularly sleepy. On the other hand,"The Great Chess Saint of Go" was a story about Go and growing up. Youth was like chess, and there was no regret in placing a piece. It was not a novel that was purely about leveling up, but there was still a plot to level up. I hope you like this fairy's recommendation. Muah ~😗