A half-demon boy who survived from the uninhabited domain, a beautiful girl who vows to protect the human world, in order to protect the their common home, They are involved in the world battle of the Magic Domain Mercenaries... [Original Webcomic on ac.qq](https://ac.qq.com/Comic/ComicInfo/id/628508) [Original Webcomic on manhua.163](https://manhua.163.com/source/5128758384220124177)