Chiba Lotte Marines will hold the "Marines Summer Festival" at Zozo Marine Stadium during their games against Hokkaido Nippon-Ham from August 21st (Fri) to August 23rd (Sun), and against Fukuoka Softbank from August 25th (Tue The Marines to August 27th (Thu).

The area around the stadium will be lined with game corners offering shooting galleries and yo-yo fishing, as well as food stalls selling shaved ice and yakisoba. Festival-themed performers are also scheduled to appear around the stadium. Furthermore, fireworks will be launched at every game during the six-day event, creating a festive atmosphere throughout Zozo Marine Stadium.

The event's key visual depicts the athletes enjoying a summer festival in a ukiyo-e style, and original merchandise featuring this design is also planned for sale.