Ichizen!

 (いちぜん!) is currently a five-member Japanese idol group originally formed with seven members in April 2019.

They made their stage debut on April 21, 2019, @Ebisu CreAto.

Current Members

 * Takayama Yui (高山結衣; ) (Founding Member)
 * Katakami Aina (片上あいな; ) (Founding Member)
 * Otsuka Minami (大塚みなみ; ) (Joined November 15, 2020)
 * Himetsuki Rinka (姫月りんか; ) (Joined September 23, 2021)
 * Fumizuki Haru (文月映瑠; ) (Joined September 23, 2021)

Former Members

 * Shinomiya Nanami (篠宮奈々美; ) (Founding Member; Graduated September 22, 2020)
 * Shirahama Saya (白浜さや; ) (Founding Member; Graduated September 22, 2020)
 * Usami Ruka (宇佐美るか; ) (Founding Member; Graduated September 22, 2020)
 * Hirano Nana (平野七夕; ) (Founding Member; Left November 5, 2020)
 * Yamauchi Hinata (山内日向; ) (Joined November 15, 2020; Left June 25, 2021)
 * Honda Kasumi (本多郁純; ) (Joined November 15, 2020; Left September 4, 2021)
 * Ohsaki Shoko (大嵜翔子; ) (Founding member; Left December 29, 2021)
 * Naruse Tsukasa (成瀬月咲; ) (Joined November 15, 2020; Left November 10, 2022)
 * Momose Ruu (百瀬るう; ) (Joined September 23, 2021; Graduated January 16, 2023)

Albums

 * 1) [2021.05.19] Uta de Mirai wo Egakou (歌で未来を描こう)

Singles

 * 1) [2022.06.22] Mirai Riso Keikaku (未来理想計画)

Other CD

 * 1) [2021.05.19] Uta de Mirai wo Egakou (歌で未来を描こう)
 * 2) [2021.09.23] Kimi Natsu Hanabi (君夏ハナビ)

Digital Singles

 * 1) [2021.02.24] Metasequoia (メタセコイア)
 * 2) [2021.02.24] Setsugetsuka wo Miru Koro ni (雪月花を見る頃に)
 * 3) [2021.03.10] Amayo no Hoshi ni Mita Hikari (雨夜の星に見た光)
 * 4) [2021.03.24] Kimi Color (キミColor)
 * 5) [2021.04.21] POWER OF THE DREAM
 * 6) [2021.05.05] Setsuna Gradation (セツナサグラデーション)
 * 7) [2021.05.19] Koi Hanabi (恋花火)
 * 8) [2021.06.02] Douka Kamisama (どうか神様)

Music Videos

 * [2019.08.23] Koi Hanabi
 * [2019.12.31] POWER OF THE DREAM