Fallout x konosuba (discontinued rewrite in progress)

(First story please be gentle)
Y/N is a 15 year old high school student who lives a semi normal life until his life was unfortunately cut short on his walk home from school when he is offered a choice to go to the world of konosuba he accepts but makes a unorthodox choice he wants every set of power armor and all of his weapons from fallout 3 and new Vegas