A few years and a string of local performances later, the group came to the notice of members of popular Japanese rock band Judy and Mary and were offered a recording deal with Sony Japan's Pop Artist imprint in 1999.

[3] After a fifth single, "Akubi" (a rearranged new recording of a song from their EP), the group divided their time between completing their high school education and working on the follow-up album, "Chameleon".

After a short tour behind the album, the group began to finish their final year of high school, in the meantime releasing a trilogy of three singles in late 2002 that featured a cover version of a favorite classic J-Pop or J-Rock hit on the A-side and a new Whiteberry original on the B-side.

Whiteberry spent most of 2003 off the road and out of the studio as their education took precedence, but were commissioned to record two songs for the soundtrack album to the TV series Superior Defender Gundam Force.

Yuki Maeda and Yukari Hasegawa re-emerged in 2006 with a new four-piece pop/punk band, Yukki;[6] the quartet released a five-song EP, Sotsugyou, in May 2006 on the Japanese independent label Deadgirls.