Travel Notes on Future Earth

When I woke up, I found that I had arrived 500 years later. At this time, human civilization had been highly developed and the greatest country in human history—the Earth Empire—had been established. Under the leadership of Old A, I appreciated the beauty of high technology and rode on the space battleship I dreamed of. It was a magnificent and unusual starship. However, during the voyage, an accident occurred while we were jumping in space, and we were teleported to the war zone. Only then did I realize that the seemingly peaceful empire was actually full of dangers...