Kanto 2015 was a national Smash 64 tournament held in the Chuo ward of Tokyo, Japan by Takuro, the top Jigglypuff main in Japan. There were 103 entrants and it was streamed on Nico Nico. Like many other Japanese tournaments, there were no prize payouts. The tournament held pools followed by a single elimination bracket, resulting in two 3rd/4th place ties and four 5th/8th place ties.
It was notably the first Japanese tournament with top North American players in attendance: SuPeRbOoMfAn from Canada and Mariguas from Mexico. Karajan from the United States and Olikus from Norway also attended. SuPeRbOoMfAn and Mariguas both reached top 8, where SuPeRbOoMfAn lost against Moyashi and Mariguas against wario, the top Pikachu in Japan, who won that tournament, being his second national in a row.