2010

2010 was the year when Kamei Eri, Li Chun (Junjun), and Qian Lin (Linlin) graduated from Morning Musume and Hello! Project.

Members

 * January ?: Wonderful Hearts disbands to form Hello! Project Mobekimasu
 * March 20: Nakane Yui, Nakane Ai, Kuramon, Kakki join NICE GIRL Project! Kenshuusei
 * March 21: Uchida Yuma graduates from Canary Club and NICE GIRL Project!
 * March 27:
 * Kizawa Runa, Nagasawa Wakana, and Kudo Haruka join Hello! Pro Egg
 * Shugo Chara Egg! and Guardians 4 disband
 * April 1: Oha Girl Maple is formed
 * April 29: Hoyumi, Miichan, Kiniiya join NICE GIRL Project! Kenshuusei
 * May 3: Melon Kinenbi disbands
 * May 16: Ex-ceed! is formed
 * May ?: Lilpri is formed
 * July 31: Hashiguchi Erina graduates from NICE GIRL Project!
 * September 4: Katou Karen graduates from NICE GIRL Project!
 * September 26: Otsuka Momoko leaves NICE GIRL Project!
 * October 28: Ex-ceed! disbands
 * November ?: Hirano Tomomi leaves Hello! Pro Egg
 * November ?: Sasamine Aoi debuts as an AV actress.
 * December 15:
 * Kamei Eri, Li Chun, and Qian Lin graduate from Morning Musume and Hello! Project
 * Muten Musume disbands
 * Muten Musume is formed
 * Ice Creamusume disbands
 * Tanaka Anri, Sengoku Minami, Sainen Mia, Okai Asuna, Komine Momoka, Maeda Irori, and Kizawa Runa leave Hello! Pro Egg
 * Afternoon Musume is formed
 * Afternoon Musume is formed

Singles

 * January 6: SHOCK! - ℃-ute
 * January 20: Going On! - Guardians 4 (last)
 * February 3: Our Songs - Buono!
 * February 10: Onna ga Medatte Naze Ikenai - Morning Musume
 * February 24: Haru no Arashi - Mano Erina
 * March 3: Otakebi Boy WAO! / Tomodachi wa Tomodachi Nanda! - Berryz Koubou
 * March 6: READY! KICK OFF!! - Ongaku Gatas
 * March 14: Otona ni Narutte Muzukashii!!! - S/mileage
 * April 4: Mianeyo ~Gomennasai~ - Maeda Yuki
 * April 28: Campus Life ~Umarete Kite Yokatta~ - ℃-ute
 * May 12:
 * Onegai Dakara... - Mano Erina
 * Our Steady Boy - YuiKaori (debut)
 * May 26: Yume Miru Fifteen - S/mileage (major debut)
 * June 9: Seishun Collection - Morning Musume
 * June 16: Little-Princess☆Pri! - Lilpri (debut)
 * July 14: Maji Bomber!! - Berryz Koubou
 * July 21: Futari / VIVIVID PARTY! - YuiKaori
 * July 28: ○○ Ganbaranakutemo Eenende!! - S/mileage
 * August 25: Dance de Bakoon! - ℃-ute
 * September 15:
 * Genkimono de Ikou! - Mano Erina
 * Ameagari no Niji no you ni - Abe Natsumi
 * September 29: Onaji Jikyuu de Hataraku Tomodachi no Bijin Mama - S/mileage
 * October 6: Watashi no Miryoku / LOVE^2 Paradise - THE Possible
 * October 13: Oshare My Dream / Elegant Girl - Kitagami Mimi (CV Ogawa Mana) / Himuro Ibu (CV Sugaya Risako)
 * October 27: Appare Kaiten Zushi! - Muten Musume
 * November 10: Shining Power - Berryz Koubou
 * November 17:
 * Onna to Otoko no Lullaby Game - Morning Musume
 * Idolulu - Lilpri (last)
 * HEARTBEAT ga Tomaranai! - YuiKaori
 * November 24: My School March - Oha Girl Maple with S/mileage
 * November 27: LOVE Namida Iro - Okai Chisato
 * December 1: Aitai Lonely Christmas - ℃-ute
 * December 10:
 * Seinaru Kane ga Hibiku Yoru - Niigaki Risa
 * Seinaru Kane ga Hibiku Yoru - Tanaka Reina
 * Seinaru Kane ga Hibiku Yoru - Tsugunaga Momoko
 * Seinaru Kane ga Hibiku Yoru - Yajima Maimi
 * Seinaru Kane ga Hibiku Yoru - Suzuki Airi
 * Egao ni Namida ~THANK YOU! DEAR MY FRIENDS~ - Okai Chisato
 * Manatsu no Kousen - Okai Chisato

Albums

 * February 3: Wo Shi Da Xiao Jie (Year of the Tiger Version) - Da Xiao Jie
 * February 10: We are Buono! - Buono!
 * February 17: MELON'S NOT DEAD - Melon Kinenbi
 * February 24: Shocking 5 - ℃-ute
 * March 3: Mecha Mote Iinchou Mecha Hit Kyokushuu 1 - Ogawa Mana, MM Gakuen Gasshoubu
 * March 10: Shugo Chara! Song♪Best - Buono!. Guardians 4, Shugo Chara Egg!
 * March 17: 10 MY ME - Morning Musume
 * March 31:
 * 6th Otakebi Album - Berryz Koubou
 * AI KAGO meets JAZZ ~The first door~ - Kago Ai
 * April 21: URA MELON - Melon Kinenbi (last)
 * July 21: ① Teenage Blues - Ogawa Mana
 * July 25: END OF THE GATE - Noto Arisa
 * July 28: ONE - Goto Maki
 * August 10: The Best Buono! - Buono!
 * August 14: innocent as a BABY - Noto Arisa
 * November 22: Goto Maki 2001- 2007 - Goto Maki
 * November 24:
 * MORE FRIENDS - Mano Erina
 * Minna Happy! Mama no Uta - Tsuji Nozomi
 * December 1: Fantasy! Juuichi - Morning Musume
 * December 8:
 * Warugaki 1 - S/mileage (debut)
 * Hello Cover - Kamei Eri
 * December 12: a piece of Romance - Noto Arisa
 * December 15: Petit Best 11 - Hello! Project

DVDs

 * January 20: Morning Musume Yomiuri Land EAST LIVE 2009 - Morning Musume
 * January 27:
 * ℃-ute Concert Tour 2009 Natsu Aki ~Cutie JUMP!~ - ℃-ute
 * Manoguide in Yakushima - Mano Erina
 * February 10: Berryz Koubou Concert Tour 2009 Aki ~Medachitaii!!~ - Berryz Koubou
 * February 17:
 * ℃-ute Cutie Circuit 2009 ~Five~ - ℃-ute
 * Koisuru Hello Kitty - Mano Erina
 * February 24: Morning Musume Concert Tour 2009 Aki ~Nine Smile~ - Morning Musume
 * March 3:
 * Mano Erina Single V Clips 1 - Mano Erina
 * too sweet Eri - Kamei Eri
 * March 10: CLIPS vol.1 - Buono!
 * March 17: Shugo Chara! Clip♪Best - Buono!, Guardians 4, Shugo Chara Egg!
 * March 31: Hello! Project 2010 WINTER Kachou Fuugetsu ~Shuffle Date~ (DVD) - Hello! Project
 * April 28:
 * Hello! Project 2010 Winter Kachou Fuugetsu ~Mobekimasu!~ (DVD) - Hello! Project
 * Sayu - Michishige Sayumi
 * May 19: Buono! Live 2010 ~We are Buono!~
 * June 2: Figure - Takahashi Ai
 * June 16:
 * Special Joint 2010 Haru ~Kansha Mankai! Mano Erina 2 Shuunen Totsunyuu & S/mileage Major Debut e Sakura Sake! Live~ - Mano Erina, S/mileage
 * Alo-Hello! 4 Morning Musume DVD - Morning Musume
 * June 23:
 * Berryz Koubou Festival ~Youkoso Otakebi Land e~ - Berryz Koubou
 * Fix no E - Yajima Maimi
 * July 7: ℃-ute Concert Tour 2010 Haru ~Shocking LIVE~ - ℃-ute
 * July 14:
 * Morning Musume Concert Tour 2010 Haru ~Pikappika!~ - Morning Musume
 * Alo-Hello! 3 Niigaki Risa DVD - Niigaki Risa
 * August 4:
 * Maeda Yuuka Junpaku - Maeda Yuuka
 * Hello! Project 2010 WINTER Kachou Fuugetsu ~Shuffle Date~ (Blu-ray) - Hello! Project
 * Hello! Project 2010 Winter Kachou Fuugetsu ~Mobekimasu!~ (Blu-ray) - Hello! Project
 * August 25:
 * Berryz Koubou Concert Tour 2010 Shoka ~Umi no ie Otakebi House~ - Berryz Koubou
 * Natsuyasumi - Suzuki Airi
 * September 15: Fashionable - Morning Musume
 * October 27: Hello! Project 2010 Summer ~Fankora!~ - Hello! Project
 * November 10: Buono! Live Tour 2010 ~Rock'n Buono!~ 3 - Buono!
 * November 17: Alo-Hello! 2 Berryz Koubou DVD - Berryz Koubou