| College Cosmos | Members | Discography | Publications | Concerts & Events | Gallery | Music Videos |
This page consists of the basic information about all of the members of the group College Cosmos.
Former Members[]
| Name | Born | Origin | Join Date |
University | Major | Departure Date |
Notes |
|---|---|---|---|---|---|---|---|
 Akizuki Kana |
December 3, 1998 (age 25) |
Tokyo | October 3, 2018 | Keio University | Faculty of Letters | May 31, 2020 | |
 Suga Marin |
November 21, 1997 (age 26) |
Hokkaido | Kokogakuin University | Faculty of Economics | Miss Contest 2018 Secondary Grand Prize, former member of PEACEFUL (2011-2012) | ||
 Ito Ayaka |
March 26, 1999 (age 25) |
Kanagawa | Rikkyo University | College of Intercultural Communication | |||
 Yukishima Momoha |
September 13, 1998 (age 25) |
Tokyo | Seijo University | Faculty of Arts and Literature | |||
 Gunji Nao |
April 16, 1998 (age 26) |
Fukushima | Nihon University | College of Art | |||
| June 25, 1998 (age 25) |
Tokyo | Japan Women's College of Physical Education | Faculty of Physical Education | Former child actor | |||
 Matsui Mari |
October 22, 1996 (age 27) |
Tokyo (raised in Hiroshima) |
Chuo University | Faculty of Law | March 31, 2020 | Miss Contest 2017 Finalist | |
 Tsushima Haruka |
March 24, 1999 (age 25) |
Tokyo | Rikkyo University | College of Arts | Former child actor | ||
 Matsuoka Motoka |
December 23, 1997 (age 26) |
Tokyo | Jissen University | Faculty of Humanities and Social Sciences | |||
 Nakajima Nana |
August 14, 1997 (age 26) |
Nagano | Tokyo University of Agriculture | Faculty of Applied Bio-Science | December 13, 2019 | ||
| October 14, 1997 (age 26) |
Tokyo | Keio University | Faculty of Business and Commerce | October 31, 2019 | "Mirai Shoujo" finalist, former member of Hello Pro Kenshuusei (2013-2014), concurrent Country Girls member (2018-2019) | ||
 Wakita Rina |
July 31, 1998 (age 25) |
Saitama | Tokyo University of Science | Department of Business Economics | Miss Contest 2018 Grand Prize | ||
 Ito Mai |
May 2, 1996 (age 27) |
N/A | Tamagawa University | Department of Liberal Arts | Miss Contest 2016 Grand Prize | ||
 Aya |
July 11, 1996 (age 27) |
Chiba | Rissho University | Faculty of Economics | Miss Contest 2017 Secondary Grand Prize | ||
 Hiraga Sakino |
March 20, 1997 (age 27) |
Tokyo | Seisen University | Department of Japanese Language and Literature | Miss Contest 2017 Finalist | ||
 Sakamoto Misaki |
September 12, 1996 (age 27) |
Chiba | Atomi University | Faculty of Letters | |||
 Watanabe Marin |
October 11, 1996 (age 27) |
Tokyo | Kokushikan University | Faculty of Political Science and Economics | |||
 Fukasawa Kyoka |
October 5, 1996 (age 27) |
Tokyo | Senzoku Gakuen | College of Music | |||
 Niinomi Rina |
February 26, 1996 (age 28) |
Aichi | Musashino University | Faculty of Human Sciences | Miss Contest 2016 Secondary Grand Prize | ||
 Okamoto Mayuko |
September 20, 1995 (age 28) |
Hiroshima | Waseda University | School of Human Sciences | |||
 Aono Natsuki |
March 29, 1997 (age 27) |
Tokyo | Keio University | Faculty of Letters | |||
 Hashimoto Sana |
November 5, 1997 (age 26) |
Tokyo | Chuo University | Faculty of Economics | June 30, 2019 | Miss Contest 2018 Finalist | |
 Wakita Mana |
January 7, 1997 (age 27) |
Saitama | Tokyo University of Science | School of Management | March 31, 2019 | Miss Contest 2015 Finalist | |
 Funada Miko |
November 12, 1996 (age 27) |
Ehime | Aoyama Gakuin University | College of Literature | Former member of seeDream (2016) | ||
 Nitadori Megumi |
July 18, 1998 (age 25) |
Tokyo | Keio University | Faculty of Letters | January 21, 2019 |
Tenures[]
| Name | Join Date | Departure Date | Tenure |
|---|---|---|---|
| Akizuki Kana, Suga Marin, Ito Ayaka, Yukishima Momoha, Gunji Nao, Natsuki | October 3, 2018 | May 31, 2020 | 1 Year, 7 Months, 28 Days |
| Matsui Mari, Tsushima Haruka, Matsuoka Motoka | October 3, 2018 | March 31, 2020 | 1 Year, 5 Months, 28 Days |
| Nakajima Nana | October 3, 2018 | December 13, 2019 | 1 Year, 2 Months, 10 Days |
| Yamaki Risa, Wakita Rina, Ito Mai, Aya, Hiraga Sakino, Sakamoto Misaki, Watanabe Marin, Fukasawa Kyoka, Niinomi Rina, Okamoto Mayuko, Aono Natsuki | October 3, 2018 | October 31, 2019 | 1 Year, 0 Months, 28 Days |
| Hashimoto Sana | October 3, 2018 | June 30, 2019 | 0 Years, 8 Months, 27 Days |
| Wakita Mana, Funada Miko | October 3, 2018 | March 31, 2019 | 0 Years, 5 Months, 28 Days |
| Nitadori Megumi | October 3, 2018 | January 21, 2019 | 0 Years, 3 Months, 18 Days |
Members Single Count[]
| Year Joined | Member | Debut Single | Last Single | Single Count |
|---|---|---|---|---|
| 2018 | Akizuki Kana | Yume wa Ijiwaru / Kotoba no Mizu wo Roka Shitai / Kigou Nanka ja nai Watashitachi wa |
Shiawase no Arika wa Dochira Desu ka / Watashi Kakumei |
2 Singles |
| Suga Marin | ||||
| Ito Ayaka | ||||
| Yukishima Momoha | ||||
| Gunji Nao | ||||
| Natsuki | ||||
| Matsui Mari | ||||
| Tsushima Haruka | ||||
| Matsuoka Motoka | ||||
| Nakajima Nana | ||||
| Yamaki Risa | ||||
| Wakita Rina | ||||
| Ito Mai | ||||
| Aya | ||||
| Hiraga Sakino | ||||
| Sakamoto Misaki | ||||
| Watanabe Marin | ||||
| Fukasawa Kyoka | ||||
| Niinomi Rina | ||||
| Okamoto Mayuko | ||||
| Aono Natsuki | ||||
| Hashimoto Sana | Yume wa Ijiwaru / Kotoba no Mizu wo Roka Shitai / Kigou Nanka ja nai Watashitachi wa |
1 Single | ||
| Wakita Mana | ||||
| Funada Miko | ||||
| Nitadori Megumi |
Members Line-Ups[]
| Date | Member(s) | Total Members | Age Average | Singles Released with Line-up |
|---|---|---|---|---|
| October 3, 2018 (Formation) |
Founding members Yamaki Risa, Matsui Mari, Akizuki Kana, Suga Marin, Hashimoto Sana, Wakita Rina, Ito Mai, Nitadori Megumi, Tsushima Haruka, Ito Ayaka, Yukishima Momoha, Gunji Nao, Aya, Hiraga Sakino, Sakamoto Misaki, Watanabe Marin, Fukasawa Kyoka, Matsuoka Motoka, Niinomi Rina, Wakita Mana, Okamoto Mayuko, Aono Natsuki, Funada Miko, Natsuki, and Nakajima Nana. | 25 | 21.04 | Yume wa Ijiwaru / Kotoba no Mizu wo Roka Shitai / Kigou Nanka ja nai Watashitachi wa |
| January 21, 2019 | Nitadori Megumi withdraws. | 24 | 21.083 | |
| March 31, 2019 | Wakita Mana and Funada Miko graduate. | 22 | 21.272 | None |
| June 30, 2019 | Hashimoto Sana graduates. | 21 | 21.429 | Shiawase no Arika wa Dochira Desu ka / Watashi Kakumei |
| October 31, 2019 | Yamaki Risa, Wakita Rina, Ito Mai, Aya, Hiraga Sakino, Sakamoto Misaki, Watanabe Marin, Fukasawa Kyoka, Niinomi Rina, Okamoto Mayuko, and Aono Natsuki graduate. | 10 | 21 | None |
| December 13, 2019 | Nakajima Nana graduates. | 9 | 21.1 | |
| March 31, 2020 | Matsui Mari, Tsushima Haruka, and Matsuoka Motoka graduate. | 6 | 21.16 | |
| May 31, 2020 | College Cosmos suspends activities. Akizuki Kana, Suga Marin, Ito Ayaka, Yukishima Momoha, Gunji Nao, and Natsuki graduate. | 0 | None |
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