Rondo of Magicians and Guns

For the first time since the Dark Eruption, humanity is exposed to the power of magic. In the 700th year of the Gregorian calendar, Xinlun government officials discovered a young man on the ground. The moment a boy who is ignorant of the world meets a girl who is trapped in a quagmire, the gears of fate begin to spin. Then came the roar of the best and worst of times!