Kiiro 5 (黄色5; Yellow 5) was one of the original Hello! Project shuffle groups in 2000 along with Akagumi 4 and Aoiro 7. The theme of the shuffles were based on colors, theirs being yellow. The group was led by Abe Natsumi.
Their song was Kiiroi Osora de BOOM BOOM BOOM. The song was released on 8cm CD single (EPDE-1071 ), and was also released on Petit Best ~Ki Ao Aka~. Kiiro 7 members Heike Michiyo and Abe Natsumi released a solo versions of "Kiiroi Osora de BOOM BOOM BOOM" on their albums For ourself ~Single History~ and Hitoribocchi, respectively. The single reached #3 on the weekly Oricon charts and charted for ten weeks, selling 475,970 copies. It also reached #53 on the yearly Oricon charts for 2000.
From Morning Musume:
From Coconuts Musume:
- [2000.03.08] Kiiroi Osora de BOOM BOOM BOOM (黄色いお空でBOOM BOOM BOOM)
- [2000.04.26] Hello Project - Petit Best ~Ki Ao Aka~ (#2 Kiiroi Osora de BOOM BOOM BOOM)
- [2008.12.10] Hello Project - Hello! Project Shuffle Unit Mega Best (#1 Kiiroi Osora de BOOM BOOM BOOM)
- [2000.05.24] DVD The Ki Ao Aka