Can't Leave This Room Until I Get First Place on Syosetu Rifujin na Magonote,Unreasonable Backscratcher,理不尽な孫の手

When I woke up, I was in a pure white room.
There was only one machine in it, and that PC’s display had these words:
【You cannot leave this room unless you rank first on the novel posting site, “Let’s Write a Novel”】
And so began this story of me being trapped in this room with nothing in it, the story of my hellish daily life of posting novels.