A boy raised in the demon world becomes unrivaled in the human world for the first time in his life ~ If he had lived according to the common sense of the demon world, he would have become the strongest human race before he knew it.

魔界で育てられた少年、生まれて初めての人間界で無双する～魔界の常識で生きてたら、気付けば人類最強になっていた～