NEMURIORCA

 is an idol group that debuted in December 2018.

On July 26, 2021, a new audition was announced.

On October 11, 2021, it was announced that Usagi, Kohaku, and Woyuta would leave the group on October 17, though Kohaku was currently suspended and would not appear in the live. At the same time, it was announced the new members from the audition would debut on December 1, in the group's 3rd anniversary live.

The latest formation of the group graduated in February 2023, with their last live being held on February 26, 2023.

On February 27, 2023, the group announced auditions for a new line-up. The new line-up was revealed on May 24, 2023.

Current Members

 * Mitsuki Yuu (ミツキ ユウ;) (Joined May 24, 2023)
 * Yayoi Kaguya (ヤヨイカグヤ;) (Joined May 24, 2023)
 * Hitagi Amina (ヒタギアミナ) (Joined May 24, 2023)
 * Memori Sui (メモリスイ) (Joined May 24, 2023)

Former Members

 * Tsukimori (ツキモリ) (Original Member; Transferred to Woltanative May 2019)
 * Shiino (シイノ) (Original Member; Transferred to Meteonomicon May 2019)
 * Panda (パンダ) (Original Member; Transferred to Meteonomicon May 2019)
 * Tsukushi (ツクシ) (Joined May 2019; Graduated September 2020)
 * Takeda (タケダ) (Joined May 2019; Graduated September 2020)
 * Koori (コオリ) (Joined May 2019; Graduated September 2020)
 * Usagi (ウサギ) (Joined December 2020; Left October 17, 2021)
 * Kohaku (コハク) (Joined December 2020; Left October 17, 2021)
 * Woyuta (ヲユタ) (Joined December 2020; Left October 17, 2021)
 * Utsuno Miya (ウツノミヤ) (Original Member; Graduated December 1, 2021)
 * Ren (レン) (Joined December 2020; Graduated December 1, 2021)
 * Airi (アイリ) (Original Member; Graduated February 26, 2023)
 * Rokichan (ロキチャン) (Joined May 2019; Graduated February 26, 2023)
 * Hoshina Rin (ホシナリン) (Joined November 22, 2021; Graduated February 26, 2023)
 * Rei (レイ) (Joined November 22, 2021; Graduated February 26, 2023)
 * Hirune (ヒルネ) (Joined November 22, 2021; Graduated February 26, 2023)

Albums

 * 1) [2019.12.21] N E M U R I O R C A