Unit established in 2013, major debut in October 2014 as 6-member unit. Used to be 7-member unit when manaka joined in August until YUKA left in October of 2013. After Serian and manaka went hiatus and left the group, 3 winners from M∞NSTER AUDITION were chosen as the new members in 2022.

Members
Asahi (Yellow)
MAYU (Green)
Karen (Pink)
Mika (Joined on November 2022 Through M∞NSTER AUDITION)
Yumi (Joined on November 2022 Through M∞NSTER AUDITION)
miyou (Joined on November 2022 Through M∞NSTER AUDITION)

Ex-members:
YUKA (Orange) - Left October 2013
LINA (Purple) - Left July 2013, has two brother who are artist (Jun Shirota) and musical actor (Yuu Shirota).
Maju (Red) - Announced Inactive in April 16, 2017 and Left in June 30, 2017.
Serina (Blue) - left July 2022
manaka (Purple) - Joined August 2013, left on July 2022

Twitter: @LittleGleeMonst
Facebook: @LittleGleeMonster
YouTube: @リトグリ Official Channel