One Piece Day is a yearly event meant to celebrate the July 22, 1997, launch of the One Piece manga in Weekly Shonen Jump. The Japan Anniversary Association made One Piece Day an official anniversary in 2017. You can watch this year’s One Piece Day livestream for free on the official One Piece YouTube channel. A press release revealed the following updates and activities for the One Piece Day ’26 livestream:The latest One Piece franchise updates and a One Piece Card Game special announcement. One Piece Day may also provide more information on other previously announced projects.