Ace of the Diamond: Season 4
Season 4 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Ace of the Diamond Season 3.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 4 Progress Shield
Up Ahead
Apr 5, 2026
Seido takes on Norikane High as Sawamura struggles to live up to the weight of the team's ace number.
For the Team
Apr 12, 2026
Ichidaisan High faces off against Yakushi, with Amahisa revealing a new pitch in his showdown with Raichi.
The Path of the Victor
Apr 19, 2026
The showdown between Amahisa and Raichi kicks off the second half of the Yakushi-Ichidaisan match.
Something Off
May 3, 2026
Potential injuries plague both Seido and Ichidaisan, while Sawamura tries out new pitches.
The Unveiling
May 10, 2026
Amahisa and Sawamura reveal a few new tricks to start the Ichidaisan-Seido match.
What's Built Up
May 17, 2026
Ichidaisan and Seido continue to clash with no ground to spare in a tight match between ace pitchers.
The Mentality of the Ace
May 24, 2026
The pressure builds on Sawamura as the Ichidaisan team brings out all its tricks to break the stalemate.
High Voltage
May 31, 2026
The pitchers' duel continues as Seido struggles to make up for lost ground.
My Fight
Jun 7, 2026
As late innings roll around, Seido seeks to break through Amahisa's ironclad pitching.
As a Partner
Jun 14, 2026
One run behind in the eighth inning, the heart of Seido's order comes to the plate with a man on third.
The Next Stage
Jun 21, 2026
After a dramatic turning point, Sawamura tries to get his last three outs of the game.