On the 4th, the Marines announced that they have decided to donate a total of 2 million yen in relief funds to Chiba Prefecture to support those affected by the August 2026 Chiba torrential rains and subsequent related disasters, consisting of 1 million yen from the team and 1 million yen from the Chiba Lotte Marines Players Association.

Additionally, over five days on August 22, 23, 25, 26, and 27, donation boxes were set up inside Zozo Marine Stadium to conduct a relief fund collection activity for visitors.

Furthermore, on August 22 and 23, players, the official team mascots, and the official cheer performers M☆Splash!! participated in fundraising activities. Through the five days of fundraising, 639,423 yen in donations were collected from visitors. A total of 2,639,423 yen, consisting of 2 million yen from the team and the Chiba Lotte Marines Players Association plus the 639,423 yen collected at Zozo Marine Stadium, will be donated to Chiba Prefecture. The donations will be used to support the lives of those affected by the disaster.