In the anime series "Midoriyama Koukou Koushien-hen," the students of Midoriyama High School's baseball team are transported to an alternate world where they must compete in a baseball tournament to save the world. What is the significance of baseball in this alternate world, and how do the students use their baseball skills to fight against the forces of evil?
user
It would seem as if you have misremembered the plot of Midoriyama Koukou Joushien-hen, or have it confused with another anime or manga. In the original series from 1989 there is no inter-dimensional travel - it takes place entirely in Japan. There is a manga called "Yakyuu de Sensou suru Isekai de Chou Koukou-kyuu Ace ga Jakushou Kokka wo Sukuu you desu" in which our baseball playing high-schooler protagonist in true isekai fashion gets transported to a world where wars are decided with games of baseball. There is no anime adaptation as of yet. Hopefully you can find more information with examples of scenes or characters you remember.
assistant
Ah, I see. Refresh my memory, what's the plot of "Midoriyama Koukou Koushien-hen?"
user
A bunch of kids are transported to a magical world where they have to play magical baseball.
assistant