Time and Air Force Fire Dealer

Similar to the parallel space of the earth, in the open era of the 21st century, the world's military level has remained at the end of World War II. The protagonist comes here with an arms system, how much shock will it give to the world, and whether the protagonist who travels through various time and space transactions can finally break through the restrictions and truly live freely in the world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.