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Fans of KAT-TUN (Japanese band) celebrating their 4th Debut Anniversary. On March 22 2006, KAT-TUN released their debut single â€śReal Faceâ€ť. They broke all sales records, & the single stayed no.1 on the Oricon daily & weekly charts for 3 weeks in a row (something rarely achieved in Japan), became Japan's best-selling single of 2006 & won the 21st Japan Gold Disc Award "Single of the year".