The event was supported by the Bureau of Industrial and Labor Affairs of Tokyo.

[2][3] This table shows the number of visitors and participants:[4] In December 2010 a group of ten large manga publishers known as the Comic 10 Society (コミック10社会, Comikku 10 Shakai) announced plans to boycott the 2011 event.

The boycott was in protest at revisions to the Tokyo Youth Development Ordinance that increased regulation of manga and anime sales to under-18 year olds.

[17][18][19] Japanese Prime Minister Naoto Kan had expressed concern about the impact of the boycott and urged the parties involved to work towards resolving the situation.

[20][21] Due to the devastating earthquake and tsunami that hit the northeast coast of Japan on March 11, 2011, it was announced five days later, that the 2011 event would be canceled.