Much of above is just implied or has to be worked out by the reader. It's actually pretty like th original Sailormoon series - a rather full-of-holes storyline that implies at something epic, which is probably why SM has so much fanfiction which tries to fill in the holes.
Mark _could_ probably write the entire thing out but the entire thing is better this way - lots of stuff to make the reader think but concise and well-written enough to to deliver a good story. I think the closest approximate in literature would be Stevenson's "Dr. Jekyll and Mr. Hyde" and some of Edgar Allan Poe's short stories - short and brutal (for an SM fic of this particular subject matter; Mark could have wrote a 20 part story about this theme) yet hinting at a greater whole.
Mark _could_ probably write the entire thing out but the entire thing is better this way - lots of stuff to make the reader think but concise and well-written enough to to deliver a good story. I think the closest approximate in literature would be Stevenson's "Dr. Jekyll and Mr. Hyde" and some of Edgar Allan Poe's short stories - short and brutal (for an SM fic of this particular subject matter; Mark could have wrote a 20 part story about this theme) yet hinting at a greater whole.