Raid

Around 50 years ago, after the Korean War, Demon World Gates appeared abruptly all over the world. Through the Gates, Demon creatures appeared. These otherworldly beings, utterly impervious to modern weaponry, rained destruction across the world. Just when all hope for humanity was lost, the "Masters" awakened: humanity's one chance for salvation. With the appearance of these entities, the world began to change rapidly. Fast forward to 50 years later- We meet Gang Kyu Sung, who had