Hamu!STAR

 (はむ！STAR) is currently a six-member Japanese trainee idol group originally formed with three members on August 31, 2019, under SISTERMANAGEMENT as a part of DIANNA Project.

They're DIANNA Project Renshuusei's first and only group.

Current Members

 * Uchiumi Honoka (内海穂乃花) (Founding Member)
 * Yamashita Ria (山下莉愛) (Joined December 2, 2019)
 * Hirose Juri (広瀬じゅり) (Joined July 12, 2020 )
 * Mirai Yui (琉桜ゆい) (Joined August, 2020)
 * Ruko (瑠香) (Joined August, 2020)
 * Umesaki Seria (梅咲せりあ) (Joined November, 2021)
 * Sasaki Rikka (佐々木りっか) (Joined March 31, 2022)

Former Members

 * Reira (玲愛) (Joined August, 2020; left September 2020)
 * Kamuro Yuzuki (加室柚希) (Founding Member; graduated March 21, 2021)
 * Hattori Rua (服部琉愛) (Founding Member; graduated March 21, 2021)
 * Airi (愛梨) (Joined August, 2020; graduated August 22, 2021)
 * Iwamoto Himari (岩本妃茉莉) (Joined July 12, 2020 ; graduated November 20, 2021 )
 * Ariru (杏璃琉) (Joined May 31, 2021; graduated February 27, 2022 )

Collaboration Video Releases

 * 1) [2020.06.15] OUCHI DE GIRLS BOUQUET LIVE-1 (w/ MERUCHU, RABBIT HUTCH, and additional trainees)
 * 2) [2020.06.15] OUCHI DE GIRLS BOUQUET LIVE-2 (w/ MERUCHU, RABBIT HUTCH, and additional trainees)
 * 3) [2020.10.05] GIRLS BOUQUET EXRA vol.1 LIVE-1 (w/ MERUCHU, RABBIT HUTCH, meow, and additional trainee)
 * 4) [2020.10.05] GIRLS BOUQUET EXRA vol.1 LIVE-2 (w/ MERUCHU, RABBIT HUTCH, meow, and additional trainee)

Trivia

 * Their name means Hamster (ハムスター).
 * Their official color on DIANNA Project's website is.
 * Ariru became one of the finalists for Miss Pre Teen International 2021.