Diamond no Ace: Act II

Seidou High finally reaches Koshien after seven years away, but the spring tournament is only the beginning of a far greater challenge. New first-years arrive, veteran players face their final summer, and every position must be earned as the team prepares for another brutal road toward the national stage.

Eijun Sawamura has grown into a pitcher his teammates can trust, yet jersey No. 1 still belongs to Satoru Furuya. Their rivalry intensifies as both struggle through form, pressure, and responsibility. For Sawamura, helping Seidou win is inseparable from one personal ambition: proving that he is ready to become the team's true ace.