Very average isekai. STORY isn't much to write home about. You have your single unique premise, baseball is war. You have an overpowered protagonist and his very weak country. He's going to save them (it's in the title). ART is very clean. Thighs for days. CHARACTERS are obvious stereotypes, but their personalities are actually toned down. Isekai protagonists are usually bland, but this guy's entire personality is that he's good at baseball. He fails to feel any emotion about anything that isn't about the game. I'm pretty sure this dude would fail the Turing test. ENJOYMENT for this manga was okay. There's not much real tension so you'rejust watching a guy in another world play baseball.

OVERALL I think it's just another manga playing the same tropes in a genre that has been done every way from hell and back.

This manga updates extremely slowly so I would only recommend it if you are just trying to pad your manga list.