Team Shanghai Alice
The is the largest of the many dōjin conventions hosting only "Touhou" content. Although the coordinator of this convention has nothing to do with Team Shanghai Alice officially, the name "Hakurei Shrine Reitaisai" was given by ZUN himself. It first started in 2004 as a way for Team Shanghai Alice to publicly distribute the trial version for their upcoming games to the fans well in advance of releasing them on the internet; in addition, the 2004 Reitaisai featured a total of 114 participating circles. Since then, many "Touhou" derivative works are gathered and sold there. Commencing every year in April or May, the convention has been hosted in Ōta, Tokyo, in 2004; Naka-ku, Yokohama, in 2005; Sunshine City, Tokyo, in 2006 and 2007; and the Tokyo Big Sight from 2008 onwards. In 2010 Reitaisai SP, an additional Reitaisai to be held every autumn due to increasing popularity, was started, but it was cancelled after 2011, and later brought back and rebranded as Autumn Reitaisai from 2014 onwards. The 2011 Reitaisai was originally cancelled due to safety concerns after the 2011 Tōhoku earthquake and tsunami, and the release of "Ten Desires" was also postponed. It was later rescheduled and held on May 8, 2011, with approximately 4,940 participating circles. In addition to events in Japan, there is another Reitaisai held in Taiwan that started in 2015. The 17th Reitaisai in 2020, which was originally going to run on March 22 before being postponed to May 17, was ultimately cancelled due to safety concerns over the COVID-19 pandemic, making it the first Reitaisai to be cancelled.