Heike's 2001 single "Kekkyoku Bye Bye Bye" was her last release with WM Japan. The song features a more mature sound compared to her previous work.
- "Kekkyoku Bye Bye Bye" reached number 37 on the Oricon singles chart. It was the lead single from her fourth studio album, Forever. The single was the B-side to the song "Cry For You".
- The song was written and produced by long-time collaborator Katsuya Yoshida. The music video was filmed in Tokyo.
- Heike retired from the music industry in 2002 to focus on her family. This single marked a departure from her earlier, more upbeat dance-pop hits.
Michiyo Heike is a Japanese pop and R&B singer. She debuted in 1997.
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