Always and forever, my answer to this and any similar question will be Fairy Tail. Of any fictional world, there is none that I would wish to immersed in more than the magical kingdom of Fiore. To be surrounded by magic, to be able to wield it, and to belong to a close knit guild like Fairy Tail would be a dream come true! I so wish Fairy Tail could be real! (according to the second pic, I get fairy magic, but THIS QUIZ gave me fire magic, like Natsu, though the first time I took it, it gave me maker magic, like Gray *shrug*) Also, if you're curious what anime world YOU belong in, HERE's that quiz ;)
I almost didn't include honorable mentions on this one since Fairy Tail won in a landslide, but there is one other I kinda wish I could experience for real. Drum roll...........
Sword Art Online
That's right, I watched SAO and thought, "That looks super cool!" I'm not much of a gamer, and no, I'm not suicidal (well, I suppose that's slightly debatable...), but to be immersed in a virtual reality like that is just really appealing to me. Being a sucky gamer, I guarantee I'd die at least 6 times in the first 10 seconds, which I guess would suck a little if I wound up in the original Aincrad where death stuck, but at the same time, that actually seems to me like a good way to go! What's super cool though is how technology is actually progressing such that it's looking like virtual reality technology like that used in SAO will soon become reality!
As always, hope you enjoyed! If you wanna learn more about me/ be my friend/ be tagged in these, please don't hesitate to ask! I'm nice, I swear (mostly ;p)! Or I guess you can follow my 100 Days of Anime collection, or both if you feel so inclined!
Until next time!