is a Japanese girl group formed in 2014. The group's themes are illustration, cosplay, and voice acting. It was originally managed by the illustration website Pixiv as a part of the before passing to Dear Stage. Members NameBirth date
Akagumi (Red Team)
Aogumi (Blue Team)
Former members
(left on January 11, 2022)
Timeline
Blue (vertical) = Digital singles Red (vertical) = Major singles Green (vertical) = Studio albums
Discography Albums # Title Release date Oricon peak position 1 Rainbow Spectrum November 16, 2015 8 2 Rainbow Eclipse December 26, 2016 12 3 Rainbow Phenomenon January 10, 2018 - 4 The Best of Rainbow December 12, 2018 9 5 Rainbow Gravity June 17, 2020 4 6 Rainbow Summer Shower July 14, 2021 16 7 April 13, 2022 27
Singles # Title Release date Oricon peak position 1 December 17, 2014 20 2 /Brand New Happy Days April 8, 2015 11 3 August 25, 2015 3 4 September 20, 2016 9 5 September 5, 2017 4 6 September 12, 2018 5 7 August 10, 2019 3 8 "Snowing Love" January 22, 2020 13 9 January 22, 2020 10 10 January 22, 2020 9 11 January 13, 2021 16
References
External links Niji no Conquistador at Oricon Niji no Conquistador at JPU Records