22/7
22/7 characters. From top left: Miyako, Reika, Akane, Jun, Sakura, Miu, Nicole, and Ayaka. (Not pictured: Yuki, Tsubomi, and Mikami)
Background information
GenresJ-pop
Years active2017–present
Labels
Members
  • Nagomi Saijō (Miu Takigawa)
  • Uta Kawase (Nicole Saitō)
  • Sally Amaki (Sakura Fujima)
  • Kanae Shirosawa (Akane Maruyama)
  • Moe Suzuhana (Mikami Kamiki)
  • Nao Aikawa (Sora Nishiura)
  • Mao Asaoka (Touko Kiryu)
  • Oto Amaya (Toa Yagami)
  • Mina Kiyoi (Kaede Nagamine)
  • Satsuki Shiina (Sumika Orihara)
  • Runa Shijo (Hotaru Ichinose)
  • Ema Tsukishiro (Mizuki Himuro)
  • Rino Mochizuki (Honoka Sera)
Past members
  • Mei Hanakawa (Nicole Saitō)
  • Chiharu Hokaze (Reika Sato)
  • Mizuha Kuraoka (Miyako Kono)
  • Urara Takasuji (Yuki Tojo)
  • Ruri Umino (Jun Toda)
  • Aina Takeda (Tsubomi Hiiragi)
  • Reina Miyase (Ayaka Tachikawa)
Websitewww.nanabunnonijyuuni.com

22/7 (ナナブンノニジュウニ, Nanabun no Nijūni) is a Japanese idol girl group formed through a media mix project by Yasushi Akimoto, Aniplex, and Sony Music Records, which included the members performing as a musical group and an anime television series based on their characters. The members consist of voice actresses who provide the voice and motion capture for their characters.

History

2017: Debut

An audition for 8 characters, which included both a CD debut and an anime, was held until December 17, 2016, with the final examination taking place on December 24, 2016.[1] On December 25, 2016, the idol group name was revealed as 22/7, which was chosen because it is an approximation to the mathematical constant , a transcendental number that represents their concept as "idols transcending through dimensions."[2] Among 10,325 applicants, 11 voice actresses were chosen through voting, with only the first 8 characters announced.[3] The group held their debut showcase on June 16, 2017,[4] and an animated adaptation was announced during their first live event on July 22, 2017.[5] 22/7's first single, "Boku wa Sonzai Shiteinakatta", was released on August 22, 2017, with the jacket designs illustrated by Yukiko Horiguchi.[6] The music video was animated by Tatsunoko Production.[6]

2018: 22/7 Keisanchū, final three characters revealed

On April 11, 2018, 22/7 released their second single, "Shampoo no Nioi ga Shita", with the CD visuals designed by Horiguchi again.[7] A series of animated character shorts were also released.[8] To promote the group's upcoming activities, 22/7 launched individual social media channels for the characters, including YouTube.[9] 22/7's variety show, 22/7 Keisanchū, was broadcast on Tokyo MX beginning July 7, 2018.[9]

22/7's third single, "Rikaisha", was released on August 22, 2018. The song was promoted during their annual live event on July 22, 2018, where they also announced Chiharu Hokaze had been elected the leader of the group.[10] "Rikaisha" debuted at #7 on the Oricon Daily Singles Chart.[11] On September 21, 2018, the last 3 characters for the remaining members of the group were revealed during a promotional event.[12]

2019–present: Departure of Hanakawa, 22/7's anime adaptation

On July 22, 2019, the music video for their fourth single, "Nani mo Shite Agerarenai" was released, becoming the first of their releases to reveal all 11 characters. The single was released on August 21, 2019, with the disc debuting in 4th with 29,000 units sold in its first week on the Oricon Weekly Singles Chart. On December 11, 2019, Mei Hanakawa announced that she was leaving the group due to health issues.[13] Hanakawa's final performance with the group was held on December 24, 2019, where Uta Kawase was introduced as a new member taking over the role of Nicole Saitō.[14]

In February 2020, Takatsuji and Kuraoka went on hiatus due to poor health;[15] Takatsuji resumed activities with the group on May 15 while Kuraoka returned to the group in September 2020.[16] On December 1, 2020, Takeda went on hiatus to focus on her studies.[16] On December 23, 2020, Hokaze announced she was leaving the group to pursue voice acting full-time, her final release with the group being "Boku ga Motteru Mono nara", which was released on February 28, 2021.[17] On March 22, 2021, it was announced Takeda would return on April 10, 2021.[18]

The remaining eight members continued to perform activities. On September 29, 2021, Umino and Kuraoka announced they were leaving the group in November while Takeda announced she was leaving in December.[19] Umino stated her reason for leaving is to pursue voice acting full-time; Kuraoka stated it was to find a career path suitable for her; and Takeda stated she wanted to pursue a career as a model and television personality.[19] On November 2, 2021, it was announced that Takatsuji would be leaving the group following a series of unexplained absences from work.[20] Following the departures of the five members, the project announced on December 27, 2021 that they were retiring the five characters played by them.[21]

Characters

Current

Miu Takigawa (滝川 みう, Takigawa Miu)
Voiced by: Nagomi Saijo[22][3]
A girl who develops inferior complex, Miu serves as the main protagonist of the anime series. She is a 16-year-old girl from Saitama Prefecture who is distinguishable from bangs that covered her eyes most of the time. Miu is designed by Yukiko Horiguchi.[23][24]
Nicole Saitō (斎藤 ニコル, Saitō Nikoru)
Voiced by: Mei Hanakawa (2017–2019),[13] Uta Kawase (2019–present)[25]
Nicole is a 16-year-old girl designed by Kurehito Misaki.[23]
Sakura Fujima (藤間 桜, Fujima Sakura)
Voiced by: Sally Amaki[22][3]
Nicknamed "Ranran", Sakura is the 16-year-old daughter of a good family. She has a sunny personality with a dark side.[26] Originally, Sakura was not written as an English speaker, but after noticing Amaki had drawn in a large overseas fanbase, she was rewritten as an English speaker who had grown up overseas.[27] She is designed by Kantoku.[23][24]
Mikami Kamiki (神木みかみ, Kamiki Mikami)
Voiced by: Moe Suzuhana[22][3]
Mikami is a 16-year-old girl with slow pace who came from Kyoto and speaks in Kyoto dialect. She is designed by Kouhaku Kuroboshi.[23] She was revealed as a character in September 2018.[12]
Toa Yagami (やがみとあ, Yagami Toa)
Voiced by: Oto Amaya[22][3]
Toa is a 15-year-old girl from Kanagawa. Has an upneat personality. She is designed by Yukiko Horiguchi.[23] She was revealed as a character in April 2020. She is one of the "Nananiji Chapter 2" characters.

Retired

Reika Satō (佐藤 麗華, Satō Reika)
Voiced by: Chiharu Hokaze (2017–2021)[22]
Reika is a 17-year-old honor student who is part of student council. She is designed by Hirokazu Koyama.[23][24] The character was retired on December 27, 2021.[21]
Miyako Kōno (河野 都, Kōno Miyako)
Voiced by: Mizuha Kuraoka (2017–2021)[22][3]
Miyako is an energetic 17-year-old girl from Osaka who speaks Kansai dialect. She is designed by Mieko Hosoi.[23][24] The character was retired on December 27, 2021.[21]
Yuki Tojo (東条悠希, Tōjō Yūki)
Voiced by: Urara Takatsuji (2017-2021)[22][3]
Yuki is a 15-year-old tomboy designed by Akio Watanabe.[23] She was revealed as a character in September 2018.[12] The character was retired on December 27, 2021.[21]
Jun Toda (戸田 ジュン, Toda Jun)
Voiced by: Ruri Umino (2017–2021)[22][3]
Jun is a 15-year-old high class girl who is designed by Masayoshi Tanaka.[23][24] The character was retired on December 27, 2021.[21]
Tsubomi Hiragi (柊つぼみ, Hīragi Tsubomi)
Voiced by: Aina Takeda (2017–2021)[22][3]
Tsubomi is a 17-year-old girl designed by Mel Kishida.[23] She was revealed as a character in September 2018.[12] The character was retired on December 27, 2021.[21]
Ayaka Tachikawa (立川 絢香, Tachikawa Ayaka)
Voiced by: Reina Miyase (2017–2023)[22][3]
Ayaka is an aggressive and militant 17-year-old girl who is designed by Koharu Sakura.[23][24]
Akane Maruyama (丸山 あかね, Maruyama Akane)
Voiced by: Kanae Shirosawa[22][3]
Akane is a 16-year-old girl whose personality resembles that of an aloof robot. However, under this face, she is a very hard-working and cheerful girl. She is designed by Tometa Ohara.[23]
Kaede Nagamine (ながみねかえで, Nagamine Kaede)
Voiced by: Mina Kiyoi[22][3]
Kaede is am energetic girl from Kanagawa. She is designed by Nari Teshima.[23] She was revealed as a character in April 2020. She is one of the "Nananiji Chapter 2" characters. It was announced on November 28, 2023 that the character will be retired on December 7 following the voice actress's worsening health issues.[28]

Discography

List of singles, with selected chart positions and sales
Title Year Peak positions Sales
JPN
[29]		 JPN
Hot
[30]
"Boku wa Sonzai Shiteinakatta"
(僕は存在していなかった)		 2017 1052
"Shampoo no Nioi ga Shita"
(シャンプーの匂いがした)		 2018 818
"Rikaisha" (理解者) 1430
"Nani mo Shite Agerarenai" (何もしてあげられない) 2019 4 15
"Muzui" (ムズイ) 2020 2 17
"Kaze wa Fuiteru ka?" (風は吹いてるか？) 2 8
"Boku ga Motteru Mono Nara" (僕が持ってるものなら) 2021 2 8
"Kakusei" (覚醒) 2 3
"Kumorizora no Mukō wa Hareteiru" (曇り空の向こうは晴れている) 2022 2 5
"Kamisama Datte Kimerarenai" (神様だって決められない) 2023 2 7
"Boku wa Konya, Deteiku" (僕は今夜、出て行く) 2 5

Filmography

Television

Year Title Network Notes
2018–present 22/7 Keisanchū (22/7 計算中) Tokyo MX 22/7's variety show[9]
2020 22/7 Tokyo MX Anime adaptation
2021 22/7 Kenzanchū (22/7 検算中) Tokyo MX 22/7's variety show (in person)

References

  1. ↑ Komatsu, Mikikazu. "AKB48 Producer Yasushi Akimoto Plans New 2D/3D Idol Project". Crunchyroll. Crunchyroll. Retrieved 27 December 2016.
  2. ↑ "秋元康氏プロデュースアイドル「22/7」、配役&素顔公開". Oricon (in Japanese). 2017-05-19. Retrieved 2018-06-30.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 Karen Ressler (2017-05-20). "Voice Actresses Revealed for Yasushi Akimoto-Produced Idol Unit 22/7". Anime News Network. Retrieved 2018-06-30.
  4. ↑ "秋元康氏プロデュース「22/7」ら8組競演 ソニーイチ押し新人ライブ". Oricon (in Japanese). 2017-06-16. Retrieved 2018-06-30.
  5. ↑ "秋元康氏プロデュースアイドル「22/7」涙の初ライブ 9・20メジャーデビュー&アニメ化決定" (in Japanese). Oricon. July 22, 2017. Retrieved June 30, 2018.
  6. 1 2 "22/7、堀口悠紀子氏の描き下ろし新ビジュアル公開". Oricon (in Japanese). 2017-08-04. Retrieved 2018-06-30.
  7. ↑ Komatsu, Mikikazu (2017-02-18). ""K-ON!," "Tamako Market" Character Designer Draws Digital Idol Group 22/7's 2nd Single Visual". Crunchyroll News. Retrieved 2018-07-01.
  8. ↑ Sherman, Jennifer (2018-05-30). "22/7 Idol Project's 1st 2 Anime Character Videos Stream Outside Japan". Anime News Network. Retrieved 2018-06-30.
  9. 1 2 3 "秋元康氏総合プロデュース、22/7(ナナブンノニジュウニ)初のテレビ番組＆バーチャルYouTuber企画がスタート!! そして待望の3rdシングル発売決定!!" (in Japanese). Niconico News. 2018-06-14. Archived from the original on 2020-09-19. Retrieved 2018-06-30.
  10. ↑ "22／7(ナナブンノニジュウニ)、3rdシングル「理解者」を初披露！リーダーに任命された帆風千春さんの抱負は――". Animate Times (in Japanese). 2018-07-28. Retrieved 2018-08-21.
  11. ↑ "デイリー シングルランキング". Oricon (in Japanese). 2018-08-22. Archived from the original on 2018-08-22. Retrieved 2018-08-22.
  12. 1 2 3 4 "22/7がデビュー1周年の日に冠番組イベント開催、念願の新キャラクター発表に号泣". Natalie (in Japanese). 2018-09-21. Retrieved 2018-10-28.
  13. 1 2 Loo, Egan (2019-12-11). "22/7 Idol Mei Hanakawa to Leave Group Before Anime's Premiere". Anime News Network. Retrieved 2019-12-11.
  14. ↑ "22/7結成3周年イベントでアニメのテーマ曲初披露、卒業する花川の役は新メンバーが継承" [22/7 organization's 3rd anniversary event debuts anime theme song; new members will take over Hanakawa's role]. Natalie (in Japanese). 2019-12-24. Retrieved 2019-12-25.
  15. ↑ Sherman, Jennifer (2020-02-24). "22/7 Voice Actress Mizuha Kuraoka Goes on Hiatus Due to Health". Anime News Network. Retrieved 2020-12-23.
  16. 1 2 Mateo, Alex (2020-12-02). "22/7 Voice Actress Aina Takeda Goes on Hiatus Due to Academic Studies". Anime News Network. Retrieved 2020-12-23.
  17. ↑ Mateo, Alex (2020-12-23). "22/7 Project's Chiharu Hokaze Graduates From Franchise". Anime News Network. Retrieved 2020-12-23.
  18. ↑ Mateo, Alex (2021-03-21). "22/7 Voice Actress Aina Takeda Returns from Academic Hiatus". Anime News Network. Retrieved 2021-03-21.
  19. 1 2 Mateo, Alex (2021-09-30). "Ruri Umino, Mizuha Kuraoka, Aina Takeda Leave 22/7 Unit". Anime News Network. Retrieved 2021-09-30.
  20. ↑ Pineda, Rafael Antonio (2021-11-02). "Urara Takatsuji Leaves 22/7 Idol Group". Anime News Network. Retrieved 2021-11-05.
  21. 1 2 3 4 5 6 Mateo, Alex (2021-12-27). "5 22/7 Characters 'Graduate' Following Cast Members' Departure from Franchise". Anime News Network. Retrieved 2021-12-27.
  22. 1 2 3 4 5 6 7 8 9 10 11 12 "ARTIST". 22/7 – ナナブンノニジュウニ (in Japanese). Archived from the original on 30 April 2018. Retrieved 22 July 2017.
  23. 1 2 3 4 5 6 7 8 9 10 11 12 13 "秋元康 デジタルアイドル グループ名は『22/7』". ローチケHMV (in Japanese). Retrieved 27 December 2016.
  24. 1 2 3 4 5 6 "Yasushi Akimoto's New Idol Group That 'Crosses Dimensions' Reveals 4 Character Designs". Anime News Network. Retrieved 27 December 2016.
  25. ↑ "リズムゲームアプリ「22/7 音楽の時間」を本日より事前登録受付開始！" [Pre-registration for the rhythm game application "22/7 Music Time" starts today!]. Aniplex (in Japanese). PR Times. 2019-12-24. Retrieved 2019-12-25.
  26. ↑ Aniplex USA [@aniplexusa] (October 24, 2017). "Sally Amaki fans! We got a special comment video where Sally wants to say a few things to her fans! Check it out! #天城サリー #ナナブンノニジュウニ" (Tweet). Retrieved 2018-06-30 – via Twitter.
  27. ↑ St. Michel, Patrick (2018-07-27). "Sally Amaki's life as an animated idol-pop star". The Japan Times. Retrieved 2018-07-27.
  28. ↑ "22/7 Project's Mina Kiyoi Ceases Activities With Franchise Due to Health". Anime News Network. Retrieved 28 November 2023.
  29. ↑ Sources for chart positions are as follows:
  30. ↑ Sources for chart positions are as follows:
  31. ↑ "オリコン週間 シングルランキング 2017年09月18日～2017年09月24日" (in Japanese). Oricon. 2017-10-02. Archived from the original on 2017-09-27. Retrieved 2018-09-28.
  32. ↑ "オリコン週間 シングルランキング 2018年04月09日～2018年04月15日" (in Japanese). Oricon. 2018-04-09. Archived from the original on 2018-04-18. Retrieved 2018-09-28.
  33. ↑ "週間 シングルランキング 2018年09月03日付". Oricon News (in Japanese). Oricon. Archived from the original on 2018-08-29. Retrieved 2018-09-02.
  34. ↑ "週間 CDシングルランキング 2019年09月02日付" [Weekly CD Single Ranking for September 2, 2019] (in Japanese). Oricon. Retrieved August 28, 2019.
  35. ↑ "週間 CDシングルランキング 2020年03月09日付" [Weekly CD Single Ranking for March 9, 2020] (in Japanese). Oricon. Retrieved March 4, 2020.
  36. ↑ "週間 CDシングルランキング 2020年10月12日付" [Weekly CD Single Ranking for October 12, 2020] (in Japanese). Oricon. Archived from the original on 2020-10-09. Retrieved October 9, 2020.
  37. ↑ "週間 CDシングルランキング 2021年03月08日付" [Weekly CD Single Ranking for March 8, 2021] (in Japanese). Oricon. Archived from the original on 2021-03-03. Retrieved March 3, 2021.
  38. ↑ "週間 CDシングルランキング 2021年12月06日付" [Weekly CD Single Ranking for December 6, 2021] (in Japanese). Oricon. Archived from the original on 2021-12-02. Retrieved December 2, 2021.
  39. ↑ =オリコン週間 シングルランキング 2022年07月25日～2022年07月31日 [Oricon Weekly Single Ranking July 25, 2022 – July 31, 2022] (in Japanese). Oricon. Archived from the original on August 3, 2022. Retrieved August 3, 2022.
  40. ↑ =オリコン週間 シングルランキング 2023年01月09日～2023年01月15日 [Oricon Weekly Single Ranking January 9, 2023 – January 15, 2023] (in Japanese). Oricon. Archived from the original on January 18, 2023. Retrieved January 18, 2023.
  41. ↑ オリコン週間 シングルランキング 2023年05月22日～2023年05月28日 [Oricon Weekly Single Ranking May 22, 2023 – May 28, 2023] (in Japanese). Oricon. Archived from the original on May 31, 2023. Retrieved May 31, 2023.
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