Legend of Mountains and Seas: Kyushu War Chronicles

Three thousand years ago, Nuwa, the goddess of the earth, took the initiative to destroy heaven, and the gods and demons perished together. The leader of the human race, the Holy King of Creation, led the human race to eliminate the remnants of the demon race, exiled the aliens who had collaborated with the demon race to the desert continent, and established the Holy Kingdom of the Kyushu Tribal Alliance. Three thousand years later, the Holy Kingdom is in crisis, and the remnants of the demons are back...