The “Project Sekai 6th Anniversary Thank You Festival,” a live stage event commemorating Project Sekai’s 6th anniversary, will be held at the Tokyo Metropolitan Gymnasium on October 3 and 4, 2026. The event will feature a three-part program consisting of a staged reading, a 6th-anniversary talk show, and the “6th Anniversary Special Live” performed by the cast and virtual singers. It will also include an exhibition in the sub-arena and merchandise sales in the outdoor area.