Monster Kingdom

The surviving humans cannot do without monsters, and monsters have become the cornerstone of the city's operation. Three hundred years ago, the first blood moon came, monsters swept across the continent, and human civilization was retreating. Three hundred years later, only the last giant city remained in the world. Ironically, what supports the operation of this city is the "so" extracted from the corpses of monsters. Monsters became the cornerstone on which the city was built. An eighteen-year-old high school student from the county town was originally a student preparing for the college entrance examination, but he accidentally traveled through time and came to this strange world. He will reveal the secret of the human-monster war for hundreds of years.