Zero Project

 (ゼロプロ) is a Japanese idol project consisting of over 100 members split into ranked and themed groups.

The members rotates between the groups every 3 months based on their popularity ranking.

All members are encouraged to achieve their individual goals and the project allows all participants to be recruited by other agencies to fulfill these goals.

2021
All Zero 5 groups made their stage debut on August 14 @KANDA SQUARE HALL.

On October 10, 2021, it was announced that 16 members were promoted to Zero 4. It was also announced that there would be more promotions during the month.

On November 5, the current system ended, with the new league and groups to be announced.

On November 9, a final list of members promoted to Zero 4 was posted, revealing yet another 39 members who had been promoted including 4 of the Z5-Senbatsu members. It was also revealed that the date of the Zero 4 groups' debut would be on November 21 @The Garden Hall.

On November 16, it was announced that another 3 members had been promoted to Zero 4, leaving the total promoted members to be 62. On the same day a list of 50 Zero 5 members were also revealed, featuring some new members. It was also apparent that Saijo Runa, would continue in the Zero 5 league despite being one of the first selection members.

On December 4, the new line-up of Zero 5 members and groups were revealed.

Zero 4

 * Z4-Senbatsu
 * Z4-A1
 * Z4-A3
 * Z4-A4
 * Z4-A5
 * Z4-B1
 * Z4-B2
 * Z4-B3
 * Z4-B4
 * Z4-B5
 * Z4-D1
 * Z4-D3
 * Z4-D4
 * Z4-D5

Zero 5

 * Z5-A1
 * Z5-A2
 * Z5-A3
 * Z5-A4
 * Z5-A5
 * Z5-B1
 * Z5-B2
 * Z5-B3
 * Z5-B4
 * Z5-B5
 * Z5-D1
 * Z5-D2
 * Z5-D3
 * Z5-D4
 * Z5-D5
 * Z5-E1
 * Z5-E2
 * Z5-E3
 * Z5-E4
 * Z5-E5

Currently Inactive

 * Z5-C1
 * Z5-C2
 * Z5-C3
 * Z5-C4
 * Z5-C5

Group Naming Explanation
The numbers are indication of the group rank, grouping and theme.

Z1-Z5 is the ranking. 1 being the top and 5 being the bottom.

A1-E5 is the grouping and the theme The five themes are as follows:
 * 1) Royalty
 * 2) Clarity
 * 3) Powerful
 * 4) Personality
 * 5) K-Pop

Current Members
0th Generation=
 * 0th Generation
 * Asahina Rin (朝比奈凛)
 * Harada Yukika (原田ゆきか)
 * Noichigo Mikuru (野苺みくる)
 * Ponto Pero (先斗ぺろ)
 * Maishi Makoto (舞石まこと)
 * -|1st Generation=
 * 1st Generation


 * Yamada Nao (山田菜緒)
 * Ichinose Rio (一ノ瀬りお)
 * Shichinohe Asami (七戸あさみ)
 * Aone Konoha (蒼音このは)
 * Ari-chan (ありちゃん)
 * Shukuzu Nuko (酒屑ぬこ)
 * Nanase Saaya (七瀬さあや)
 * Airu (あいる)
 * maasa
 * Nagamiya Rea (永宮れあ)
 * Hinata Marino (日向まりの)
 * Utagawa Hina (宇田川ひな)
 * Kashii Natsuki (花椎なつき)
 * Kato Rico (加藤理子)
 * Shirosaki Hitomi (白咲ひとみ)
 * Takayama Riko (髙山理子)
 * Shirosaki Matsuri (白崎まつり)
 * Sakuma Nana (佐久間七菜)
 * Hanai Rurina (花井瑠莉奈)
 * Kusaka Hiiro (日下緋彩)
 * Mito Chinami (美藤千波)
 * Yamashita Moe (山下萌)
 * Akimoto Maria (秋元まりあ)
 * Alyssa (ありさ)
 * Kanekawa Miyabi (金川雅)
 * Soli (소리)Ā
 * Nanase Ren (七瀬澪)
 * Amai Miyuu (甘猫みゆう)
 * Mori-chan (もりちゃん)
 * YajimaMai (矢島舞)
 * Ichiba Uno (市葉羽乃)
 * Yuzuki Misato (雪月みさと)
 * Imada Miri (今田未莉)
 * Saho.
 * Ueda Moca (上田望夏)
 * Kusunoki Anzu (楠あんず)
 * Tsukino Mizuki (月野みずき)


 * Nakano Karen (中野華恋)
 * Fukuzawa Suzuka (福沢涼栞)
 * Kurase Mashiro (倉瀬ましろ)
 * Harumi Hina (春海妃花)
 * Mochizuki Ko (望月心桜)
 * Sawada Nana (澤田なな)
 * Watarai Urumi (綿来うるみ)
 * Sara (サラ)
 * Nagase Ryo (永瀬稜)
 * POLLIE (ポリ)
 * Sakuraba Niko (桜庭にこ)
 * Nagumo Wakana (南雲和奏)
 * Satsuki (咲紫姫)
 * Takamine Yukina (高峯雪菜)
 * Megu.
 * Aiba Chiho (相羽千帆)
 * Watagashi Mio (綿菓子ミオ)
 * Kurumisawa Narumi (胡桃沢成未)
 * MIWOO (ミウ)
 * Luna (月)
 * Fujimiya Karen (藤宮かれん) (Joined July 19, 2021"メンバー変更" (in Japanese). Twitter. 2021-07-19. )
 * Myuu (みゅう) (Joined July 22, 2021"メンバー変更" (in Japanese). Twitter. 2021-07-22. )
 * Hanasaki Lisa (華咲りさ) (Joined July 22, 2021"メンバー変更" (in Japanese). Twitter. 2021-07-22. )
 * Kotoa (Joined July 28, 2021"メンバー変更" (in Japanese). Twitter. 2021-07-28. )
 * Kinu (きぬ) (Joined August 3, 2021"メンバー変更" (in Japanese). Twitter. 2021-08-03. )
 * Sioreta JK (しおれたJK) (Joined August 21, 2021 )
 * Tsuno Hirona (津野紘菜) (Joined September 1, 2021 )
 * Momose Haruka (百瀬はるか) (Joined September 7, 2021 )
 * Azuki Miyu (愛月心結) (Joined September 9, 2021"メンバー変更のお知らせ" (in Japanese). Twitter. 2021-09-09. )
 * Mashu (ましゅ) (Joined September 12, 2021"Z5B-1メンバー交代のお知らせ" (in Japanese). Twitter. 2021-09-12. )
 * Ide Ryoko (井出涼子) (Joined September 28, 2021"Z5B-1メンバー交代のお知らせ" (in Japanese). Twitter. 2021-09-28. )


 * -|2nd Generation=
 * 2nd Generation
 * Auditions scheduled to start mid August 2021 Members officially unveiled on December 4, 2021.
 * Azuma Mashiro (東茉白)
 * Iwakawa Mirai (岩川美礼)
 * Urata Mion (浦田みおん)
 * Kanei Yume (金井優芽)
 * Kishino Haruka (岸乃陽香)
 * Kozakura Purple (小桜ぱぷる)
 * Kohane Rui (恋羽るい)
 * Shio Yukina (紫桜倖那)
 * Sanai Moeka (深愛もえか)
 * Shirahana Mariya (白花まりや)
 * Sugawara Nazuna (菅原なづな)
 * Sorano Hina (昊乃ひな)
 * Taketori Runa (岳禽るな)
 * Chisato (千聖)
 * Nagisa (ナギサ)
 * Nanao Azu (七尾アズ)
 * Nanami (ななみ)
 * Hazuki (葉月)
 * Hazuki Rio (はづきりお)
 * Hayami Suzuka (頓宮鈴夏)
 * Hinahata Akari (日向端あかり)
 * Binnie (ビニ)
 * Himemiya (ひめみや)
 * Futaba Mai (双葉まい)
 * Hoshina Fuka (星名楓華)
 * Hoshimiya Rin (星宮りん)
 * Marin (麻鈴)
 * Midoriishi Ui (翠石うい)
 * Mihara Chiyo (三原千夜)
 * Miyamoto Airi (宮本愛莉)
 * Myon Rin (みょんりん)
 * Momoa Mahiro (桃愛まひろ)
 * Yayoi Megu (弥生めぐ)
 * Yuri (ユリ)
 * Lisa (リサ)
 * Risa-nyan (りさにゃん)
 * Ruka (るか)
 * Runaha Emiri (月羽笑里)
 * Wakamiya Yuriko (若宮ゆりこ)

Former Members
0th Generation=
 * 0th Generation
 * Tachibana Kirari (橘きらり) (Withdrew September 25, 2021 )
 * Mi-chan (みちゃん)
 * -|1st Generation=
 * 1st Generation
 * Kitamura Riho (北村りほ) (Withdrew July 19, 2021)
 * Mizukoshi Sae (水越早咲) (Withdrew July 19, 2021)
 * Sakura (さくら) (Withdrew July 22, 2021)
 * Ishikawa Riona (石川里緒菜) (Withdrew July 22, 2021)
 * Hashimoto Miu (橋本未羽) (Withdrew July 28, 2021)
 * Ria (りあ) (Withdrew August 3,2021)
 * Sakashita Airi (坂下愛麗) (Withdrew August 6, 2021)
 * Hana (ハナ) (Withdrew August 13, 2021 )
 * Soma Himari (相馬向日葵) (Withdrew August 13, 2021 )
 * Yohen Moe (饒辺萌絵) (Withdrew August 29, 2021 )
 * Shinkawa Mayuka (新川まゆか) (Withdrew August 30, 2021 )
 * Pomu (ぽむ) (Withdrew some point before September 7,2021)
 * Tsubaki Rion (椿りおん) (Withdrew September 9, 2021)
 * YURINA (Withdrew September 12, 2021<refname="YURINA replaced by Mashu"/>)
 * Motoi Meme (本井めめ) (Withdrew September 28, 2021<refname="Meme replaced by Ryoko"/>)
 * Aoi Arata (蒼李あらた)
 * SatoAya (佐藤彩)
 * Narukami Yuno (鳴上ゆの)
 * Misa King (みさきんぐ)
 * Toda Roa (兎田髏亞)
 * Hirota Marina (廣田まりな)
 * Tsukimiya Ramu (月宮らむ)
 * Toda Moca (兎田もか)
 * Hana Mai (羽菜舞)
 * Ito Mikana (伊藤望叶)
 * Momo Teyan (ももてゃん)
 * Miru (みる)
 * Yui (ゆい)
 * HashimotoYuki (橋本侑季)
 * Kururugi Yun (枢木ゆん)
 * Aim Doli (愛結ドリ)
 * Ibara Juri. (衣薔薇ジュリ. )
 * Umino Miu (海乃ミウ)
 * Saijo Runa (西城瑠奈)
 * Niinaga Seira (新永彩桜)
 * Ayagumo Aya (彩雲あや)
 * Uzuki Yun (兎月ゆん)
 * Sumeragi Momo (皇もも)
 * Sekine Yuma (関根夢真)
 * Sashiro Oto (佐白おと)
 * Shinonome Meguru (東雲めぐる)
 * Airu (愛琉)
 * Omura Himari (大村ひまり)
 * Shimotsukasa Moe (下司萌)
 * Ikeda Airu (いけだあいる)
 * Shuna Maru (しゅなまる)
 * Mashiro Mahiro (茉白まひろ)
 * Mizuki Nagito (水月凪叶)
 * coco
 * Yanagi Satoka (柳さとか)
 * Kanzaki Yuuha (神崎ゆうは)
 * Sato (さと)
 * Shiozawa Yuka (塩澤優華)
 * Imai Rei (今井れい)
 * Ozono Umi (大園うみ)
 * Hamana Yuuka (浜名優花)
 * Kaiya Mai (海八舞)
 * Ichinose Yuzuki (一ノ瀬結月)
 * Shirayuki Curana (白雪くらな)
 * Yahata Mone (矢羽田もね)
 * Koizumi Kosame (小泉小雨)
 * Naase (なーせ) (Joined July 19, 2021<refname="Riho replaced by Naase">"メンバー変更" (in Japanese). Twitter. 2021-07-19. )
 * Arisu Ako (有栖あこ) (Joined August 6, 2021<refname="Airi replaced by Ako">"メンバー変更のお知らせ" (in Japanese). Twitter. 2021-08-06. )
 * Nobusawa Asuka (信澤明日香) (Joined September 2, 2021 )
 * Sengoku Otori (千石囮) (Joined September 19, 2021<refname="Mori transferred and Chinami and Otori joined">"Z5-C1/E2メンバー変更のお知らせ" (in Japanese). Twitter. 2021-09-19. )
 * Nonami Mon (野波もん) (Joined September 26, 2021<refname="MIWOO transferred and Mon joined">"Z5-C5/E5メンバー変更のお知らせ" (in Japanese). Twitter. 2021-09-19. )