'' Ultra Blue '' was also a strong online digital seller . After two months of digital downloads , Ultra Blue remained in the top ten album downloads in Japan 's largest online music store , iTunes Japan . This album also became the fourth most downloaded album on iTunes Japan of the year and won an " Album of the Year " title at the 2007 Nihon Golden Disk Awards . On July 30 , 2007 , EMI Group released its Annual Report for 2007 , and in it reported that Utada ’s album '' Ultra Blue '' had sold 1.3 million units worldwide , making it EMI Music ’s 10th-best selling album of 2006 . Despite its success in terms of promotions , " Ultra Blue " is Utada 's least commercially successful Japanese album to date in terms of physical sales , until it was surpassed by Utada Hikaru Single Collection Vol . 2 in 2010 . Utada went on a nationwide Japan tour called Utada United 2006 to support the album
Utada United 2006
Utada United 2006
Ultra Blue