Lateral Arc

 (ラテラルアーク) is an idol group formed in August 2021.

They are the sister group of Cinderella Sengen!, Schrödinger no Inu, Alcute! and a member of the Cinderella's Dog Project.

On August 7 of 2021 Lateral Arc was revealed as the third members of the Cinderella's Dog Project, they debuted later the same year.

On April 1, 2023 the group changed their name to 羅照羅流嗚呼苦 (ra teru ra ryu ah ko ku), the later's concept featuring a girl crush image along a hip hop sound, the change was later revealed to be temporal and only until after their "Super April Fool's Festival 2023" concert the next day.

On July 4, 2023, it was announced that the current system would end on July 26, 2023.

Current Members

 * TBA

Former Members

 * Kasuminagi Mia (霞凪みあ; ) (Original Member; Graduated June 28, 2022)
 * Totsuki Touka (遠月とうか; ) (Original Member; Graduated July 26, 2023)
 * Nekomiya Matsuri (猫宮まつり; ) (Original Member; Graduated July 26, 2023)
 * Kurosu Mayuki (黒栖まゆき; ) (Original Member; Graduated July 26, 2023)
 * Momohime Moeka (桃姫もえか; ) (Original Member; Graduated July 26, 2023)
 * Amahane Tyamu (天羽てゃむ; ) (Original Member; Graduated July 26, 2023)
 * Konami Ron (こなみろん; ) (Joined June 29, 2022; Graduated July 26, 2023)

Digital Singles

 * [2021.08.23] ONEGAI FICTION
 * [2021.08.23] ONEGAI FICTION (Instrumental)
 * [2021.10.10] Love&Peace
 * [2021.10.10] Love&Peace (Instrumental)
 * [2021.10.10] FullVol.Speaker
 * [2021.10.10] FullVol.Speaker (Instrumental)
 * [2021.10.10] Spangles Highway
 * [2021.10.10] Spangles Highway (Instrumental)
 * [2021.10.10] AMBITION RUNWAY
 * [2021.10.10] AMBITION RUNWAY (Instrumental)
 * [2021.10.10] AMANEKUDISCO
 * [2021.10.10] AMANEKUDISCO (Instrumental)
 * [2021.10.10] IDOLlic INVASION
 * [2021.10.10] IDOLlic INVASION (Instrumental)
 * [2021.12.14] depend to U
 * [2021.12.14] depend to U (Instrumental)
 * [2022.05.04] HIGHER
 * [2022.05.04] taste of love
 * [2022.05.04] GIANT STEP
 * [2022.05.04] SAKURA MESSAGE
 * [2022.05.04] Afterglow
 * [2022.06.29] GA•NA•RE