Ace of the Diamond act II -Second Season-

Ace of the Diamond act II -Second Season- is a 13-episode sports anime that aired in Spring 2026, concluding on its final episode. The series continues the story of the Seido baseball club as they compete in the spring invitational tournament, building on the events of the previous act with high-stakes, competitive baseball action.

This season maintains the franchise's focus on intense match gameplay and team dynamics that define the Diamond no Ace series. The spring invitational setting provides the backdrop for the ultimate, heated baseball games that drive the narrative forward. Fans of competitive sports anime will find familiar ground in Seido's continued journey through the tournament circuit.

Since the series has finished airing, all 13 episodes are now available for viewing. This makes it an ideal time for viewers to watch the complete season without waiting for weekly releases, allowing for uninterrupted marathon viewing of the tournament arc.