while traveling to another world with your friends in your world hopping machine, you being the only one who was human, when all of you were sent to different worlds. You walked out, finding yourself in a lab, when suddenly the machine exploded, causing you to lose an arm. You lost consciousness, and awhile later, you wake up finding that your missing arm was replaced by a black, wolf-like arm, though the rest of your body was still normal. An anthro wolf stood in the room.

Human! You are ok!