On March, 2001, the present members were composed of the classmates from the preschool and YOH’s younger brother, RYO. When they were indies, they did lots of their concerts on the street, and the audience was surely increased. On July 4, 2003, they debuted and became major by their 1st single, “Kirikirimai”. Their 2nd single, “Shanghai Honey” was appreciated by the mass media and became a hit. On February 25,2004, they released their 5th single, “Michishirube～a road home～” came in 1st place in the Japanese single charts for the first time in themselves, and since then, their singe continued to come in 1st place to their 13th single, “Champione”.