OS☆U

 (オーエスユー; Osu Super Idol Unit) is an idol group based in Nagoya and formed in August 2010.

Current Members

 * Koda Mei (香田メイ; ) (Joined August 2014)
 * Natsukawa Ami (夏川愛実; ) (Joined July 24, 2016) Leader
 * Sasaki Natsumi (佐々木菜摘; ) (Joined May 1, 2017)
 * Igawa Natsu (井川なつ; ) (Joined May 1, 2017; Graduating March 11, 2023)
 * Emoto Rika (江本梨花; ) (Joined May 2, 2019)
 * Yamamoto Sana (山本紗愛; ) (Joined May 2, 2019)
 * Izumo Yae (出雲やえ; ) (Joined June 5, 2022)
 * Koda Rin (香田リン; ) (Joined June 5, 2022)
 * Kawaguchi Riko (河口莉子; ) (Joined January 15, 2023)
 * Mizusawa Momo (水沢桃々; ) (Joined January 15, 2023)

Former Members

 * Yokochi Shiho (横地志保) (Founding member; Graduated April, 2011)
 * Fujita Mai (藤田まい) (Founding member; Graduated Unknown)
 * Ono Yuuki (小野勇気) (Founding member; Graduated April 30, 2012)
 * Inudo Rino (犬童梨乃) (Joined July 2011; Graduated July 20, 2012)
 * Koji Mika (梶美希) (Founding member; Graduated August 18, 2012)
 * Okajima Riko (岡島里恋) (Founding member; Graduated September 1, 2012)
 * Komoto Hikari (甲本ヒカリ) (Joined July 2011; Graduated September 5, 2012)
 * Usuda Mizuki (臼田瑞姫) (Joined August 4, 2012; Graduated October 9, 2012)
 * Himuro Nodoka (氷室のどか) (Founding member; Graduated January 2013)
 * Nagasawa Catherine Masako (長澤キャサリン雅子) (Joined July 2011; Graduated February 28, 2013)
 * Hijikata Erika (土方瑛里香) (Founding member; Graduated March, 2013)
 * Tamaki Aya (玉置亜弥) (Joined July 2011; Graduated March 2013)
 * Sakuragi Mai (桜木まい) (N/A Generation; Graduated pre-debut)
 * Usami Sayaka (宇佐美沙耶香) (Joined August 4, 2012; Graduated April 17, 2014)
 * Toda Reika (戸田玲香) (Joined August 2014; Graduated October 1, 2014)
 * Kato Ayu (加藤亜優) (Joined August 2014; Graduated March, 2015)
 * Oshima Risa (大島梨紗) (Joined August 2014; Graduated March, 2015)
 * Naruse Mika (成瀬未佳) (Joined August 4, 2012; Graduated May 13, 2015)
 * Miwa Asuka (美和明日香) (Joined August 4, 2012; Graduated May 13, 2015)
 * Ban Kanami (伴かなみ) (Founding member; Graduated May 14, 2015)
 * Watanabe Yuki (渡辺友貴) (N/A Generation; Graduated June 30, 2015)
 * Okusaka Mari (奥坂まり) (Joined August 3, 2015; Graduated October 19, 2015)
 * Morisaki Tomomi (森咲智美) (Founding member; Graduated March 26, 2016)
 * Wakasugi Rin (若杉凜; ) (Joined August 2014; Graduated May 31, 2016)
 * Asakusa Makoto (朝倉真琴; ) (Joined July 2011; Graduated December 23, 2016)
 * Chono Masami (蝶野晶美; ) (Joined July 2011; Graduated February 19, 2017)
 * Sekiya Misaki (関谷美咲; ) (Joined August 3, 2015; Graduated February 25, 2017)
 * Mochizuki Ayano (望月綾乃; ) (Joined August 9, 2013; Graduated March 5, 2017)
 * Ochi Azuha (越智梓葉; ) (Joined August 3, 2015; Graduated March 28, 2017)
 * Kai Ayaka (甲斐彩花; ) (Joined August 9, 2013; Graduated May 18, 2017)
 * Miura Rinka (三浦凛花) (Joined July 24, 2016; Graduated June 1, 2017)
 * Kiyosato Chisei (清里千聖; ) (Founding member; Graduated November 11, 2017)
 * Ono Saki (大野咲貴; ) (Joined August 4, 2012; Graduated December 30, 2017)
 * Yasumi Eiko (八角瑛子; ) (Joined Late 2011; Graduated December 30, 2017)
 * Takahashi Moe (高橋萌; ) (Founding member; Graduated July 15, 2018)
 * Ishihara Yui (石原優衣; ) (Joined August 3, 2015; Graduated December 27, 2018)
 * Ikeda Nico (池田にこ; ) (Joined May 1, 2017; Graduated January 20, 2019)
 * Shida Rina (志田梨奈) (Joined April 30, 2018; Withdrew December, 2019)
 * Araki Miho (荒木美穂; ) (Joined August 4, 2012; Withdrew April 21, 2019)
 * Hashimoto Chihiro (橋本千央; ) (Joined May 1, 2017; Graduated May 12, 2019)
 * Sugiura Asuka (杉浦希香; ) (Joined May 1, 2017; Graduated May 18, 2019)
 * Asahi Hina (朝日ひな; ) (Joined May 1, 2017; Graduated April 2, 2020)
 * Noda Wakana (野田若菜; ) (Joined May 2, 2019; Graduated April 2, 2020)
 * Sunada Shizuki (砂田雫; ) (Joined May 2, 2019; Graduated August 31, 2020)
 * Ogino Kokoro (荻野心; ) (Joined August 17, 2020; Graduated September 3, 2020)
 * Narita Seira (鳴大晴咲) (Joined August 17, 2020; Graduated October 19, 2020)
 * Hoshino Maria (星野麻里愛; ) (Joined August 9, 2013; Graduated December 12, 2020)
 * Shirato Haruka (白戸遥; ) (Joined July 24, 2016; Graduated December 12, 2020)
 * Tachibana Kyoka (橘杏佳; ) (Joined August 17, 2020; Graduated March 18, 2022)
 * Konatsu Yuana (小夏ゆあな; ) (Joined May 2, 2019; Graduated June 4, 2022)
 * Isaki Moeka (伊咲萌香; ) (Joined April 30, 2018; Graduated September 17, 2022)
 * Matsumoto Rico (松本莉恋; ) (Joined April 30, 2018; Graduated September 17, 2022)
 * Saito Megu (斉藤めぐ; ) (Joined August 4, 2012; Graduated November 13, 2022)
 * Ayase Hikaru (絢瀬ヒカル; ) (Joined June 5, 2022, Withdrew February 1, 2023)

Sub-Units

 * Maneki Neko from OS☆U (Takahashi Moe, Yasumi Eiko, Saito Megu, Araki Miho, Ono Saki, Kai Ayaka)
 * Lady Note from OS☆U (Kiyosato Chisei, Chouno Masami, Asakura Makoto, Koda Mei, Mochizuki Ayano)
 * pop☆star (Hoshino Maria, Natsukawa Ami, Igawa Natsu, Sasaki Natsumi, Shirato Haruka, Isaki Moeka)
 * Genesis Girl (創世記少女 -Genesis Girl-) (Koda Mei, Matsumoto Rico)

Mini Albums

 * 1) [2013.08.18] present for you

Best Albums

 * 1) [2013.08.18] OS☆U BEST vol.1
 * 2) [2013.08.18] OS☆U BEST vol.2
 * 3) [2017.11.01] passage -OS☆U Best-

Singles

 * 1) [2010.10.16] kiss!kiss!! ~Chizu ni Nai Michishirube~ (kiss!kiss!! 〜地図にない道標〜)
 * 2) [2010.12.14] Merry Christmas!!
 * 3) [2011.03.15] girls☆girls talk!
 * 4) [2011.06.25] Surfing Striker
 * 5) [2012.04.15] Dame Moto LOVE (ダメもとLOVE)
 * 6) [2012.12.05] A-GIRL
 * 7) [2013.03.20] We are OS☆U / Ai no Katachi (We are OS☆U / アイのカタチ)
 * 8) [2014.03.29] Mousugu kiss Dayo★ (もうすぐkissだよ★)
 * 9) [2014.04.23] Naite Tamaruka, Heart no Ohikko (泣いてたまるか、ハートのお引越し)
 * 10) [2014.08.20] Churun Churun ni Kigatsuite! (ちゅるんちゅるんに気がついて!)
 * 11) [2015.03.18] Gangan☆Dance / Kimi no Tame ni... (ガンガン☆ダンス / 君のために...)
 * 12) [2015.07.28] Junshin Caribbean / I.N.G!!! (純真カリビアン / I.N.G!!!)