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In 2011 and 2012, May'n collaborated with music artist Daisuke Asakura for the singles "Scarlet Ballet", which was used as the opening theme to the anime series "Aria the Scarlet Ammo", and "Chase the world", which was used as the opening theme to the anime series "Accel World". She released her fourth album "Heat" on March 21, 2012. She represented Japan in October 2013 at the ABU TV Song Festival 2013 in Hanoi, Vietnam with her single "Vivid". She was scheduled to make an appearance at Animax Carnival Philippines in December 2013, but the event was cancelled as a result of the effects of Typhoon Haiyan.