暗黒騎士物語　～勇者を倒すために魔王に召喚されました～ (Associated Names)

This is the tale of a protagonist who was summoned to protect the demon king from the hero. Kuroki was suddenly summoned to another world. The one who summoned him was the demon king, Modes. And, the territory currently ruled by the demon king was on the verge of destruction because of the hero. The…