Asteria

 (アステリア) is a three-member Japanese idol group formed on April 1, 2019.

They made their stage debut on August 5, 2019.

A Team

 * Hoshihana Ami (星花あみ; ) (Joined November 2019)
 * Mashiro Nagisa (真白なぎさ; ) (Joined July 14, 2022)

B Team

 * Sakurai Su (桜井すぅ) (Joined October 26, 2022; Demoted to Research Student May 10, 2023)

Former Members

 * Komoe Kiru (小萌きる; ) (Founding Member; Graduated December 30, 2019)
 * Mizuno Nao (水乃なお; ) (Founding Member; Graduated April 2, 2022)
 * Sato Miu (砂糖みう; ) (Founding Member; Graduated April 27, 2022)
 * Amatsuka Koro (天使ころ; ) (Founding Member; Left July 5, 2022)
 * Jinguji Reina (神宮寺れいな; ) (A Team; Founding Member; Contract Cancelled February 7, 2023)
 * Yukihime Rin (雪姫りん; ) (Joined June 29, 2020; Graduated March 21, 2023)
 * Yuzuriha Nano (楪なの; ) (Joined October 20, 2021; Graduated July 17, 2023)
 * Yumeshiro Nijika (夢城虹架; ) (Joined June 29, 2020; Graduated July 31, 2023)

Albums

 * [2021.01.27] ASTERIA SOUNDTRACKS

Singles

 * [2019.12.25] Tokimeki Joushouchu・Brand-new-days / Asteria (トキメキ上昇中・Brand-new-days / アステリア)