Lord of Summoning When the World Changes

The end of the world arrived, and monsters from the game broke through the dimensional wall slaughtering people wantonly, and the human civilization of Blue Star became on the verge of destruction. At the last moment of the world’s collapse, his time regressed to the beginning of the game. This time he is determined to find out the mastermind behind the scenes, protect his homeland, and never let the tragedy happen again. Thus, a revenge game that races against time begins…