Pure Land Team

Grandpa hides a secret - every 200 years in our world there will be a war against mutations. What is mutation? Is it a monster, an evil spirit or something indescribable? What is our family burdened with? What should I do? Desperate situation, how can it still be a desperate situation, survival or destruction, this is the question, enter the world in this book, this land, you have to protect it.