When I woke up, I found myself in an unfamiliar body, stuck in a world of technology, overrun by dungeons, towers and territory wars.  A place called Earth, where the strongest people ran off into the tower, leaving behind the ordinary people to fend for themselves after territory wars started on Earth. More than anything, the toughest part was the fact that I went from immortality to someone who could die from tripping over a rock. Humans on Earth had evolved to use magic and skills, something that never existed previously, through the use of a thing called a system. And infuriatingly, I didn't have access to the almighty system. Flushable toilets were nice though.