 They released their 28th single on January 28, 2009, which debuted at the top of the Oricon charts, not only extending their Guinness record but also improving their own Oricon record for the most consecutive years with a number-one single.The duo's 29th single , released on October 28, 2009, debuted at the top of the Oricon charts, extending their record.At the end of 2010, the duo released their 30th single , with the lyrics written by Tsuyoshi and the music composed by Koichi.