The “Azur Lane” and public bath collaboration is celebrating its 5th anniversary, and it has been confirmed that the collaboration will take place again this year at Tatsumi Onsen in Nagai, Osaka. As a special event, participants can choose their favorite character from the 50 characters that have appeared in past public bath collaborations and have it displayed on a mirror advertisement inside the bathhouse. Applications for this event will be accepted until October 16, 2026, and participants will receive an original commemorative plate.