If we pretend other manga are like beautiful paintings, this one is like a puzzle, which you assemble piece by piece until you get the full picture. Jus like a normal puzzle, you may have some bigger gratification depending on how good is the final product(which in this case is pretty good) but most of your enjoyement will probably come in realizing how one part connects with another, and believe me, this work does this amazingly. I found myself rereading entire chapters just to be sure I catched all the references. This enjoyement only increases thanks to the characters and dialogues, which are very wellwritten.
If you are a fan of interconnected stories and/or puzzles, this manga is for you.