After hearing a mysterious voice, Yusuke Tagami is summoned to another world, "Calzio". The fate entrusted to the otherwise ordinary guy who just wants to play games is to become the "Evil God of Calamity" in this new world. He can upgrade weapons, change the landscape and change how he tastes things... With his new power of "Customize and Create", there's nothing he can't do. Will he bring change to this imperfect world!? The very popular manga whose hero uses his "cheat" skills for the good!!