2015 Happenings

11 graduations
36 left groups
5 new albums
15 new singles
2 new leaders
2 retirements
23 joined groups
2 new groups
9 new idols
1 disbanded groups
1 ex-leaders

January 2015

2 Fujii Rio leaves HelloPro Kenshuusei
2 Hamaura Ayano leaves HelloPro Kenshuusei
2 Hirose Ayaka leaves HelloPro Kenshuusei
2 Inoue Rei leaves HelloPro Kenshuusei
2 Taguchi Natsumi leaves HelloPro Kenshuusei
2 Ogawa Rena leaves HelloPro Kenshuusei
2 Kobushi Factory is formed
2 Wada Sakurako leaves HelloPro Kenshuusei
2 Nomura Minami leaves HelloPro Kenshuusei
14 Maeda Irori releases “Twinkle Star Light / Himitsu”
21 Berryz Koubou releases “Kanjuku Berryz Koubou The Final Completion Box”

February 2015

4 ANGERME releases “Taiki Bansei / Otome no Gyakushuu”
18 HelloPro Kenshuusei releases “① Let's say "Hello!"”
25 Mikame Kana leaves HelloPro Kenshuusei
25 Mikame Kana retires from show business
25 Mikame Kana leaves Hello! Project

March 2015

1 Takase Kurumi joins HelloPro Kenshuusei
1 Takase Kurumi joins Hello! Project
3 Sudou Maasa leaves Hello! Project
3 Sugaya Risako leaves Hello! Project
3 Tsugunaga Momoko leaves Berikyuu
3 Berryz Koubou disbands
3 Tokunaga Chinami leaves Berikyuu
3 Sudou Maasa leaves Berikyuu
3 Natsuyaki Miyabi leaves Berikyuu
3 Kumai Yurina leaves Berikyuu
3 Sugaya Risako leaves Berikyuu
3 Shimizu Saki leaves Hello! Project
3 Shimizu Saki steps down as leader of Berryz Koubou
3 Kumai Yurina leaves Hello! Project
3 Sugaya Risako leaves Berryz Koubou
3 Natsuyaki Miyabi leaves Hello! Project
3 Kumai Yurina leaves Berryz Koubou
3 Shimizu Saki leaves Berryz Koubou
3 Natsuyaki Miyabi leaves Berryz Koubou
3 Tsugunaga Momoko leaves Berryz Koubou
3 Tokunaga Chinami leaves Hello! Project
3 Shimizu Saki leaves Berikyuu
3 Sudou Maasa leaves Berryz Koubou
3 Tokunaga Chinami leaves Berryz Koubou
8 Hirose Ayaka becomes leader of Kobushi Factory
17 Up Up Girls (Kari) releases “Third Album (Kari)”
25 Country Girls releases “Itooshikutte Gomen ne / Koi Dorobou”
26 Kobushi Factory releases “Nen ni wa Nen / Survivor”

April 2015

1 ℃-ute releases “The Middle Management ~Josei Chuukan Kanrishoku~ / GamushaLIFE / Tsugi no Kado wo Magare”
8 Juice=Juice releases “Wonderful World / Ça va? Ça va?”
15 Morning Musume｡’15 releases “Seishun Kozou ga Naiteiru / Yuugure wa Ameagari / Ima Koko Kara”
27 Nakano Rion joins HelloPro Kenshuusei
27 Nakano Rion joins Hello! Project
27 Kanatsu Mizuki joins HelloPro Kenshuusei
27 Kanatsu Mizuki joins Hello! Project
27 Maeda Kokoro joins Hello! Project
27 Akiyama Mao joins HelloPro Kenshuusei
27 Okamoto Honoka joins HelloPro Kenshuusei
27 Ono Mizuho joins HelloPro Kenshuusei
27 Okamoto Honoka joins Hello! Project
27 Ono Mizuho joins Hello! Project
27 Maeda Kokoro joins HelloPro Kenshuusei
27 Kasahara Momona joins HelloPro Kenshuusei
27 Yanagawa Nanami joins HelloPro Kenshuusei
27 Akiyama Mao joins Hello! Project
27 Yanagawa Nanami joins Hello! Project
27 Kasahara Momona joins Hello! Project
29 Yamagishi Riko leaves HelloPro Kenshuusei
29 Kishimoto Yumeno leaves HelloPro Kenshuusei
29 Niinuma Kisora leaves HelloPro Kenshuusei
29 Ogata Risa leaves HelloPro Kenshuusei
29 Tanimoto Ami leaves HelloPro Kenshuusei
29 Asakura Kiki leaves HelloPro Kenshuusei
29 Tsubaki Factory is formed

May 2015

8 Kikkawa You releases “Hana”

June 2015

12 Shimamura Uta leaves Hello! Project
12 Shimamura Uta retires from show business
12 Shimamura Uta leaves Country Girls

July 2015

1 LoVendoЯ releases “Iin Ja nai? / Futsuu no Watashi Ganbare!”
8 Ciao Bella Cinquetti releases “Omotesando / Futako Tamagawa / Never Never Give Up”
15 Juice=Juice releases “First Squeeze!”
22 ANGERME releases “Nana Korobi Yaoki / Gashin Shoutan / Mahou Tsukai Sally”

August 2015

5 Country Girls releases “Wakatteiru no ni Gomen ne / Tamerai Summertime”
8 Yamagishi Riko becomes leader of Tsubaki Factory
10 Akiyama Yurika leaves Hello! Project
10 Akiyama Yurika leaves Ciao Bella Cinquetti
10 Akiyama Yurika leaves Team・Makenki
19 Morning Musume｡’15 releases “Oh my wish! / Sukatto My Heart / Ima Sugu Tobikomu Yuuki”

September 2015

2 Kobushi Factory releases “Dosukoi! Kenkyo ni Daitan / Ramen Daisuki Koizumi-san no Uta / Nen ni wa Nen (Nen Iri Ver.)”
6 Tsubaki Factory releases “Seishun Manmannaka”

October 2015

14 Kikkawa You releases “TBD”

November 2015

5 Yanagawa Nanami leaves HelloPro Kenshuusei
5 Funaki Musubu leaves HelloPro Kenshuusei
29 Fukuda Kanon leaves Hello! Project
29 Fukuda Kanon leaves ANGERME

December 2015

31 Sayashi Riho leaves Hello! Project
31 Sayashi Riho leaves Morning Musume｡’15