Yakyuu de Sensou Suru Isekai de Choukoukoukyuu Ace ga Jakushou Kokka wo Sukuu You desu

Tokonatsu Taichi, a dazzling ace pitcher with a devastating arsenal that included a 98-mph fastball, took the summer Koshien tournament by storm. But on the way home from the final game, the team bus was involved in a fatal accident, and Taichi lost his life. Instead of oblivion, he awoke in a strange new world—one where all international disputes are settled through baseball. Unfortunately, the nation where he now finds himself is the weakest of them all, having slowly lost both its resources and its people to stronger neighboring countries. Now, with his unparalleled talent, can Taichi reverse their desperate fortunes?