2013 Happenings

people
- 15 1 new idols
- 6 0 retirements
- 0 0 born
- 6 0 graduations
- 5 -2 new groups
- 0 -4 disbanded groups
- 14 -3 joined groups
- 11 -28 left groups
- 1 -1 new leaders
- 1 -1 ex-leaders
music
- 35 -7 new singles
- 18 7 new albums

December 2013
- 26
  - Up Up Girls (Kari) releases “Santa Claus”
- 25
  - Up Up Girls (Kari) releases “Nijiiro Mosaic / ENJOY!! ENJO(Y)!!”
- 21
  - HelloPro Kenshuusei releases “Oheso no Kuni Kara Konnichiwa / Ten Made Nobore!”
- 18
  - S/mileage releases “Ee ka!? / ｢Ii Yatsu｣”
- 17
  - Noto Arisa releases “Rainbow Drops”
- 14
  - Kaneko Rie leaves Hello! Project
    
    H!P
  - Kaneko Rie retires from show business
  - Kaneko Rie leaves HelloPro Kenshuusei
  - Kaneko Rie steps down as leader of HelloPro Kenshuusei
- 11
  - Hello! Project releases “Pucchi Best 14”
    featuring Morning Musume｡, Berryz Koubou, ℃-ute, ANGERME, Peaberry, GREEN FIELDS, Juice=Juice, Dia Lady, Mellowquad, HI-FIN and Jurin
    
    H!P
- 4
  - Juice=Juice releases “Ijiwaru Shinaide Dakishimete yo / Hajimete wo Keikenchuu”
November 2013
- 18
  - Miyamoto Karin leaves HelloPro Kenshuusei
  - Takagi Sayuki leaves HelloPro Kenshuusei
  - Uemura Akari leaves HelloPro Kenshuusei
  - Kanazawa Tomoko leaves HelloPro Kenshuusei
- 6
  - ℃-ute releases “Tokai no Hitorigurashi / Ai tte Motto Zanshin”
October 2013
- 30
  - Up Up Girls (Kari) releases “Starry Night / Seishun Build Up”
- 21
  - Mashiro Kana retires from show business
  - Mashiro Kana leaves Hello! Project
    
    H!P
  - Mashiro Kana leaves HelloPro Kenshuusei
- 2
  - Berryz Koubou releases “Motto Zutto Issho ni Itakatta / ROCK Erotic”
September 2013
- 25
  - Morning Musume｡ releases “The Best!～Updated Morning Musume｡～”
  - Ishii Rika releases “La mer”
  - Kobayashi Azusa releases “Distance”
- 22
  - Haga Akane joins Hello! Project
    
    H!P
  - Funaki Musubu joins Hello! Project
    
    H!P
  - Ooura Hirona joins Hello! Project
    
    H!P
  - Niinuma Kisora joins Hello! Project
    
    H!P
  - Danbara Ruru joins Hello! Project
    
    H!P
  - Yokogawa Yumei joins Hello! Project
    
    H!P
  - Yamaki Risa joins Hello! Project
    
    H!P
  - Haga Akane joins HelloPro Kenshuusei
  - Funaki Musubu joins HelloPro Kenshuusei
  - Ooura Hirona joins HelloPro Kenshuusei
  - Niinuma Kisora joins HelloPro Kenshuusei
  - Danbara Ruru joins HelloPro Kenshuusei
  - Yokogawa Yumei joins HelloPro Kenshuusei
  - Yamaki Risa joins HelloPro Kenshuusei
- 11
  - Juice=Juice releases “Romance no Tochuu / Watashi ga Iu Mae ni Dakishimenakya ne (MEMORIAL EDIT) / Samidare Bijo ga Samidareru (MEMORIAL EDIT)”
  - The Possible releases “Otome! Be Ambitious!”
- 4
  - ℃-ute releases “⑧ Queen of J-POP”
  - Up Up Girls (Kari) releases “SAMURAI GIRLS / Wild Seven”
  - Jurin releases “Hotaru Matsuri no Hi”
August 2013
- 28
  - Morning Musume｡ releases “Wagamama Ki no Mama Ai no Joke / Ai no Gundan”
- 7
  - Kikkawa You releases “Best of YOU!”
  - Mellowquad, Dia Lady and HI-FIN release “Lady Mermaid / Eiya sa! Brother / Kaigan Seisou Danshi”
July 2013
- 30
  - Da Xiao Jie releases “Follow Me”
- 24
  - Up Up Girls (Kari) releases “Summer Beam! / Up Up Typhoon”
- 23
  - Jurin is formed
    with Miyamoto Karin and Satou Masaki
- 10
  - ℃-ute releases “Kanashiki Amefuri / Adam to Eve no Dilemma”
- 8
  - Mutou Mika retires from show business
  - Mutou Mika discontinues soloist work
- 5
  - Ootsuka Aina retires from show business
  - Ootsuka Aina leaves Hello! Project
    
    H!P
  - Ootsuka Aina leaves HelloPro Kenshuusei
- 3
  - S/mileage releases “Atarashii Watashi ni Nare! / Yattaruchan”
June 2013
- 19
  - Berryz Koubou releases “Golden Chinatown / Sayonara Usotsuki no Watashi”
- 12
  - HelloPro Kenshuusei and Juice=Juice release “Ten Made Nobore!”
- 5
  - Up Up Girls (Kari) releases “Ginga Joujou Monogatari / Burn the fire!! / Natural Born Idol”
- 1
  - Okamura Rise retires from show business
  - Okamura Rise leaves Hello! Project
    
    H!P
  - Okamura Rise leaves HelloPro Kenshuusei
May 2013
- 22
  - S/mileage releases “②Smile Sensation”
  - LoVendoЯ releases “LoVendoЯ Cover The ROCK”
- 21
  - Tanaka Reina leaves Hello! Project
    
    H!P
  - Tanaka Reina leaves Morning Musume｡
- 8
  - Juice=Juice releases “Samidare Bijo ga Samidareru”
- 1
  - Tanaka Karen joins Hello! Project
    
    H!P
  - Inaba Manaka joins Hello! Project
    
    H!P
  - Mikame Kana joins Hello! Project
    
    H!P
  - Fujii Rio joins Hello! Project
    
    H!P
  - Mashiro Kana joins Hello! Project
    
    H!P
  - Inoue Hikaru joins Hello! Project
    
    H!P
  - Tanaka Karen joins HelloPro Kenshuusei
  - Inaba Manaka joins HelloPro Kenshuusei
  - Mikame Kana joins HelloPro Kenshuusei
  - Fujii Rio joins HelloPro Kenshuusei
  - Mashiro Kana joins HelloPro Kenshuusei
  - Inoue Hikaru joins HelloPro Kenshuusei
April 2013
- 24
  - Kikkawa You releases “Two YOU”
- 23
  - Ishii Rika releases “SLOW LOVE”
- 17
  - Morning Musume｡ releases “Brainstorming / Kimi Sae Ireba Nani mo Iranai”
- 10
  - Up Up Girls (Kari) releases “Next Stage / Ano Saka no Ue de､”
  - The Possible releases “Zenryoku Banzaai! My Glory!”
- 3
  - Okada Robin Shouko becomes leader of The Possible
  - Juice=Juice releases “Watashi ga Iu Mae ni Dakishimenakya ne”
  - GREEN FIELDS releases “Tokainaka no Kare”
  - ℃-ute releases “Crazy Kanzen na Otona”
March 2013
- 20
  - S/mileage releases “Tabidachi no Haru ga Kita”
- 13
  - Berryz Koubou releases “Asian Celebration”
  - Up Up Girls (Kari) releases “SAKURADRIVE / Dateline”
- 6
  - Kitahara Sayaka releases “Haru no Gradation”
- 2
  - Dia Lady is formed
    with Sugaya Risako and Suzuki Airi
  - Mellowquad is formed
    with Yajima Maimi, Tokunaga Chinami, Natsuyaki Miyabi and Okai Chisato
  - HI-FIN is formed
    with Nakajima Saki, Fukuda Kanon, Hagiwara Mai, Ishida Ayumi and Ikuta Erina
- 1
  - Sasaki Rikako joins Hello! Project
    
    H!P
  - Sasaki Rikako joins HelloPro Kenshuusei
February 2013
- 28
  - Iwashima Manami retires from show business
- 27
  - Peaberry releases “Cabbage Hakusho〜Haru Hen〜”
- 23
  - Mano Erina leaves Hello! Project
    
    H!P
  - Mano Erina discontinues soloist work
- 20
  - The Possible releases “Aratamemashite、THE Possible Desu!〜Nyuumonhen Best〜”
  - Up Up Girls (Kari) releases “RespecTokyo / Straight Up〜Straight Up!〜”
- 6
  - Mano Erina releases “BEST FRIENDS”
  - ℃-ute releases “Kono Machi”
- 3
  - Juice=Juice is formed
    with Miyazaki Yuka, Kanazawa Tomoko, Takagi Sayuki, Ootsuka Aina, Miyamoto Karin and Uemura Akari
  - Miyazaki Yuka joins Hello! Project
    
    H!P
January 2013
- 30
  - Berryz Koubou releases “Berryz Mansion 9kai”
  - Up Up Girls (Kari) releases “First Album (Kari)”
- 23
  - Morning Musume｡ releases “Help me!!”
- 20
  - Noto Arisa releases “Hello,Little Monsters”
- 16
  - Kikkawa You releases “Sekaijuu ni Kimi wa Hitori Dake / Valentine's RADIO / Chocolate Damashii”