Chiba Lotte Marines announced that the title of their documentary film has been decided as "MARINES DOCUMENTARY 2026 PLAY MUST GO ON." Along with this, a trailer was released on the film's special website.

This work is the fourth in a series that began in 2023, a documentary film that started close-up coverage from spring training and depicts various aspects of the team, including the players' true faces and the behind-the-scenes of games. This film was directed by two people: Kentaro Shima, a Chiba Prefecture native, and Kohei Hayashi.

Shima, who took the megaphone for the second consecutive year following last year's film, commented, "Every time I make this documentary film about The Marines, I rediscover the fun of baseball and come to love The Marines even more. I sincerely hope that after watching this film, everyone will think about what an interesting season this year was and look forward to next year. Please, see it in theaters."

Hayashi called out, "The other day, a fan of The Marines said to me, 'I'm looking forward to the movie at the end of the year.' Even if you know the results, your heart can still be moved. This year's film is packed with many such moments. Yes, please look forward to it!"

▼ Thoughts of both directors embedded in the subtitle "PLAY MUST GO ON" ▼
After the final game of the 2026 season, Manager Saburo told the fans, "Our story has only just begun." There are wins, and there are defeats. There is joy, and there is frustration. Professional baseball is a harsh world that moves forward to the next season without stopping, while accepting whatever results come. Even if people change, situations change, and a different landscape from yesterday unfolds, the players head toward the next play. That is exactly why I believe dramas that excite people are born in baseball. The professional baseball season continues. And the story of The Marines also continues. We put those thoughts into "PLAY MUST GO ON."