Misaka Mikoto
Seeing nothing better to do, and not being able to understand the co-ordinates (they didn't map to Latitude and Longitude, at least) in the slightest, the girl bravely took the trial and error option: select the first number on the screen and see if it came up with a text-based explanation or some idea of where things led.
Fujiwara no Mokou
"I guessed this wasn't the same world," the Japanese girl pointed out, following the swordsman and his stubborn desire to head north for... some reason. This place pretty clearly wasn't Gensokyo--the architecture was entirely wrong, and there wasn't any sort of zombie problem like that--and the outside world... well, it also didn't have a zombie problem. If anything, its problem was a complete lack of zombies.