The Outer-God Bookstore (CYOA Essence)

Who knew filling out a random Reddit survey would turn my life upside down? One second I'm sitting in my living room, the next I have the power to become the peak of reality. Well.. I did say I'd run a Dimensional Bookstore - So let's do just that! [MC has CYOA Essence of Blank and Home - He starts off as a normal human, but those Essences work in tandem to eventually make him the peak of all realities. Oh, and HAREM!]