The fantasy worlds depicted in movies, TV dramas, anime, novels, video games, and other media have become connected to the real world. Want to gain supernatural powers? Make a name for yourself? Get wealth, power, and beautiful women? Show off, face-slap your rivals, and conquer the world?
None of this is impossible, but the original plots of the fantasy worlds you know may be of little use. You'll have to face thousands upon thousands of competitors, and the awesome characters in those worlds aren't tools or NPCs. Forget all the vicious monsters: even an inconspicuous little animal could kill you... This isn't a game. There are no cheats or bugs, and you can't revive after dying. Make one mistake, and you'll probably pay a terrible price with no chance to take it back. Even if you do nothing wrong, you could still lose your life for some inexplicable reason. There's no rhyme or reason to it.