Personally, I think the Mary-Sue Factor was taken too far for it to be readable. I love a good Mary-Sue esqu character when done well (ie Luke Skywalker, Harry Potter, Percy Jackson, Sung Jin-Woo, & most - if not all - manga/manwha MCs), but this just... felt a little over the top. The complete prostration and idol worship heaped onto the SI!MC had no balance. I dropped it at chapter 6 so it may have gotten better, who knows, but I had trouble continuing it. If you like this sort of thing, go for it. It wasn't TERRIBLE but it wasn't GREAT.