Kusumi Koharu (久住小春) is a Japanese pop singer, talent, and fashion model managed by Just Production. She was formerly a member of Morning Musume and Hello! Project, and an exclusive model for CanCam magazine.
- Name: Kusumi Koharu (久住小春)
- Nicknames: Koha (こは), Kussun (くっすん), Kohacchi (こはっち), Kusumin (くすみん), Koharunrun (こはるんるん)
- Birthday: July 15, 1992
- Birthplace: Nagaoka, Niigata, Japan
- Blood Type: A
- Height: 167cm
- Skills: Impressions, abacus
- Hobbies: People-watching
- Motto: Kusumi Koharu
- Favorite food: Thick white chocolate, plums
- Favorite words: Miracle
- Favorite colors: Pink
- Hello! Project groups:
- Morning Musume (2005–2009)
- Wonderful Hearts (2006–2009)
- Morning Musume Tanjou 10nen Kinentai (2007)
- Kira☆Pika (2007)
- MilkyWay (2008–2009)
- ZYX-α (2009)
- Metro Rabbits H.P. (2006)
- Ganbarou Nippon Ai wa Katsu Singers (2011)
- Dream Morning Musume (2011–)
Kusumi Koharu joined Hello! Project on May 1, 2005 as the sole member of Morning Musume's seventh generation after passing the Morning Musume Audition 2005. She was first featured on the single "Iroppoi Jirettai", on the studio album Rainbow 7, and made her concert debut on May 7, 2005 at Morning Musume's 2005 Spring concert tour.
Her big break came in 2006, when she was cast as the voice of Tsukishima Kirari, the main character in the anime Kirarin☆Revolution, which ran for three years and ended in 2009. She gained a solo debut as "Tsukishima Kirari starring Kusumi Koharu" with the single "Koi☆Kana". Her singles were used as opening and ending theme songs for the anime. In addition, fellow Hello! Project members Hagiwara Mai, Kikkawa Yuu, and Kitahara Sayaka lent their voices to prominent guest characters. Kusumi and Hagiwara formed Kira☆Pika in 2007, and Kusumi, Kikkawa, and Kitahara formed MilkyWay in 2008 until the show's end on March 27, 2009. On June 3, 2009, a one-shot manga titled "Miracle☆Revolution ~Kusumi Koharu Monogatari~" was published in Ciao magazine and covered her idol life. Thanks to Kirarin, Kusumi is currently a regular cast member on Oha Star.
On September 19, 2009, Kusumi's graduation was announced. On December 6, 2009, Kusumi Koharu graduated from Morning Musume and Hello! Project. In September of 2011 she became an exclusive model for CanCam magazine. Koharu's graduation as a model from CanCam was revealed on a cover of the magazine in July, 2015.
- Note: All releases are credited to Tsukishima Kirari starring Kusumi Koharu (Morning Musume) unless otherwise noted.
- [2007.02.28] ☆☆☆
- [2007.12.19] Kirarin☆Land (きらりん☆ランド)
- [2008.12.17] Kirari to Fuyu (きらりと冬)
- [2009.03.11] Best☆Kirari (ベスト☆きらり)
- [2006.07.12] Koi☆Kana (恋☆カナ)
- [2006.10.25] Balalaika (バラライカ)
- [2007.05.02] Happy☆彡 (ハッピー☆彡)
- [2007.11.07] Chance! (チャンス!)
- [2008.07.16] Papancake (パパンケーキ)
- [2009.02.04] Hapi☆Hapi Sunday! (はぴ☆はぴ サンデー!)
- [2011.09.24] Asaasamba (アサアサンバ) (Kusumi Koharu)
- [2009.09.30] Jump!! (Kusumi Koharu)
Compilations / Other
- [2006.10.18] Various - Kirarin☆Revolution Song Selection (#1 Koi Hanabi, #2 Love da yo☆Darling)
- [2006.11.22] Various - Kirarin☆Revolution Original Soundtrack Vol.1 (#1 Koi☆Kana (Opening Ver.), #37 SUGAO-flavor (Ending Ver.))
- [2006.12.20] Hello! Project - Petit Best 7 (#9 Koi☆Kana)
- [2007.09.12] Various - Kirarin☆Revolution Song Selection 2 (#1 Happy☆彡)
- [2007.12.12] Hello! Project - Petit Best 8 (#10 Happy☆彡)
- [2008.07.23] Various - Kirarin☆Revolution Song Selection 3 (#1 Chance!, #2 Ramutara, #3 Olala)
- [2008.08.27] Various - Kirarin☆Revolution Song Selection 4 (#1 Papancake, #3 Anataboshi (Kirari Ver.), #6 Sansan GOGO (Kirari Ver.))
- [2008.12.10] Hello! Project - Petit Best 9 (#8 Papancake)
- [2009.03.18] Various - Kirarin☆Revolution Song Selection 5 (#3 Hapi☆Hapi Sunday!)
- [2010.12.02] Hello! Project - Petit Best 10 (#13 Hapi☆Hapi Sunday!)
- [2010.12.22] Various - Minna no Idol☆Collection ~TV Anime Hit Song Shuu~ (#1 Happy☆彡, #10 Balalaika)
- [2011.12.21] Hello! Project - Petit Best 12 (#17 Asaasamba)
- [2014.07.09] Hello! Project - Hello! Project no Zenkyoku Kara Atsumechaimashita! Vol. 3 (#7 Konnichi pa)
- [2020.01.08] Hello! Project - Petit Best 20 2020 (Disc 3 #12 Chance!)
- TV Programs
- [2005–2007] Hello! Morning (ハロー! モーニング)
-  Musume DOKYU! (娘DOKYU!)
- [2006–2009] Oha Star (おはスタ) (as Tsukishima Kirari)
- [2007–2008] Haromoni@ (ハロモニ@)
- [2008–2009] Yorosen! (よろセン!)
-  Piramekiino (ピラメキーノ)
-  Nachicoral Gakuen (ナチコラル学園)
- [2009–2014] Oha Star (おはスタ) (as a regular)
- [2010–2014] Oha Colosseum (おはコロシアム) (as a regular)
- [2014–] Otoboke POPS (音ボケPOPS) (as a regular)
- TV Dramas
-  Hossoku! Gal Naikaku (発足!ギャル内閣)
-  Again!! (アゲイン!!) (as Abe Tama)
- [2006–2009] Kirarin☆Revolution (きらりん☆レボリューション) (as Tsukishima Kirari)
-  Ribbon no Kishi The Musical (リボンの騎士 ザ・ミュージカル) (as Minister's Son)
-  Cinderella The Musical (シンデレラ The ミュージカル) (as the Herald)
-  Abe Naikaku (安倍内閣)
-  2LDK
-  Phantasy Star Online 2-ON STAGE- (ファンタシースターオンライン2-ON STAGE-) (as Mira)
-  TBC Fun Field Mou Let's Mou Dash (TBC FUNふぃーるど・モーレツモーダッシュ) (2 episodes)
-  Myu~komi (ミュ〜コミ) (1 episode)
-  Recommen! (レコメン!) (1 episode)
-  Hello Pro ya nen! (ハロプロやねん!) (1 episode)
- [2006.03.24] Kusumi Koharu (久住小春) amazon.co.jp
- [2007.09.20] POP amazon.co.jp
- [2008.07.25] Koharu Nikki. (小春日記。) amazon.co.jp
- [2008.12.02] Happy Memorial☆Photobook (ハッピーメモリアル☆フォトブック) (Tsukishima Kirari starring Kusumi Koharu (Morning Musume)) amazon.co.jp
- [2009.09.27] Sugar Doll amazon.co.jp
- [2011.02.10] Kusumi Koharu 17sai no Tenshoku (久住小春 １７歳の転職) (essay book)
- She is the second Morning Musume member to come from Niigata, following Ogawa Makoto.
- Skilled at volleyball, which she played since third grade of primary school and was the captain of her team.
- Her audition song was Morning Musume's "Furusato".
- Sometimes called the "Miracle", for during the auditions for Morning Musume's seventh generation, Tsunku stated that he was looking for an "ace".
- During her audition, she stated that she prefers cool images over cute.
- Stated Yoshizawa Hitomi and Fujimoto Miki as the members she admires the most. She has also stated that Fujimoto is her favorite celebrity on both Hello! Morning and Music Fighter.
- Her Morning Musume mentor was Michishige Sayumi.
- She is the youngest artist to debut solo within Hello! Project.
- She was the best selling Hello! Project soloist in 2006.
- Bust: 78cm, Waist: 59cm, Hips: 85cm