In Another World Where Baseball Is War, A High School Ace Player Will Save A Weak Nation

is a Japanese translocation-genre sports manga by Riku Misora.

Plot Summary
Tokonatsu Taichi took the summer Koshien by the storm as a sensational ace pitcher, with a full arsenal of pitches including a 98 mph fastball. But on the way home from the game, the team bus suffered a tragic accident and Taichi lost his life... Only to be transported to a new world where all international conflicts are resolved by baseball. Unfortunately, the country he landed in was the weakest, and had seen its gradual loss of resources and people to neighboring countries. Can Taichi turn their fortunes around?