Welcome To The Union World

On the planet called earth there is a young boy named (Y/n) (L/n) he had just graduated from his college and is working in a restaurant, as the day goes by he is heading back to his home only for him to see a child chasing after a ball oblivious of an incoming truck causing (Y/n) to sacrifice himself to save the child, in the process he woke up and found himself in the middle of nowhere of a snowy wasteland, how he got here? will he be able to find civilization? only time will tell