& Scinfinity

 (＆シンフィニティ), is currently a one-member idol group formed in May 2021.

The group is produced by member Hasegawa Aki.

They made their debut one-man live on December 18, 2021 @Ebisu CreAto!.

It was announced that the current structure would end, along with the graduation of Arisu Kako and Minase Momoka on January 7, 2023, which was later changed to February 12, 2023. It was later announced that Yushiro Risa would graduate as well, alongside them.

Current Members

 * Hasegawa Aki (長谷川あき; ) (Original Member)

Former Members

 * Ogura Sayaka (小倉さやか; ) (Original Member, Graduated on April 24, 2022)
 * Tsukishima Rino (月島りの; ) (Original Member, Graduated on April 24, 2022)
 * Kitano Mayuho (北野まゆほ; ) (Joined on April 26, 2022; Hiatus from September 20, 2022; Left on November 8, 2022)
 * Arisu Kako (有栖かこ; ) (Original Member; Graduated on February 12, 2023)
 * Minase Momoka (水瀬ももか; ) (Original Member; Graduated on February 12, 2023)
 * Yushiro Risa (ゆしろりさ; ) (Joined on April 26, 2022; Graduated on February 12, 2023)

Timeline
Note: 

Unreleased Songs

 * Pink Gloss (ピンクグロス)
 * Kimi to Watashi no Monogatari (君と私の物語; A Story of You and Me)
 * Suki nano (すきなの)
 * &Scinfinity (&シンフィニティ)
 * Love Formula
 * AmaKoi Monogatari (甘恋物語; Sentimental Love Story)
 * ON-STAGE
 * Kimiiro Starlight (君色スターライト; Your Color Starlight)