Jakarta, Aug. 4 -- Indonesia marks its 80th anniversary on August 17, with tradition dictating the government and public preparing to hoist the national flag, transforming the nation from Sabang to Merauke into "a sea of Red and White."

This year's celebrations, however, come with an unexpected yet popular banner.

Instead of simply flying the Red and White flag as usual, some Indonesians have begun raising the Straw Hat Pirates flag, an icon from the Japanese comic and animation series One Piece .

Photos and videos circulating on social media show residents hoisting the fictional flag on homes, vehicles, and in public spaces. Some footage shows the pirate ensign flown beneath the national flag, while other clips show the fictional symb...