Ace of Diamond

With a wild pitch that completely missed the batter, Eijun Sawamura loses his last middle school baseball game. His teammates vow to reach the national tournament once they reach high school.

Then a recruiter from Tokyo's prestigious Seido High School shows up — drawn not by Sawamura's results, but by something unusual about his throwing style. Encouraged by his teammates, Sawamura accepts and heads to Tokyo.

But Seido is nothing like he imagined. Surrounded by simply better players, he struggles to find his place. He declares he will become the team's ace — the number that matters most in Japanese baseball.

The problem is that Satoru Furuya, also a first-year, is already making a name for himself with a fastball that leaves batters in his wake. Two newcomers. One number. And a national championship that Seido fully intends to win.

Season 4 announced — premieres April 5, 2026