- Name: Furukawa Konatsu (古川小夏)
- Nicknames: Konacchan (こなっちゃん), Konatsu (こなつ), Kona (こな)
- Birthday: June 5, 1992
- Birthplace: Kanagawa, Japan
- Blood type: B
- Height: 154 cm
- Hobbies: Doing nothing, napping, singing, talking
- Specialty: Dancing, swimming
- Likes: Puzzles, cherry trees in full bloom
- Dislikes: Hurrying
- Favorite Colors: Black, cute colors, white
- Favorite Flower: Cherry blossoms
- Favorite Foods: Candy, salmon roe sushi, shrimp, sweet foods, tofu, tomato, watermelon
- Least Favorite Food: Meat
- Looks Up To: Matsuura Aya
- Hello! Project groups:
- Up-Front groups:
- Gatas Brilhantes H.P. (2012–)
- Has a Chihuahua named Ron.
- Has a younger sister.
- Was the deputy director of her junior high school handicrafts club.
- Is good friends with Korenaga Miki, Goto Yuki, and Maeda Yuuka.
- Attends local dance school lessons in addition to her Hello! Pro Egg lessons.
- Made her first concert appearance at Hello! Project 2005 Winter All Stars Dairanbu in January 2005.
- Was an assistant during the Metro Rabbits H.P. match at Hello! Project SPORTS FESTIVAL 2006.
- Eats bread for breakfast.
- Has a habit of crossing her legs.
- Her favorite spot is her bed.
- It was announced on Janaury 31, 2011 that Furukawa Konatsu had completed her Egg training. Her next activity would be a stage play.
- In January 2011 it was announced that she would be part of a dance cover group called UFZS that represents Up Front and womens magazine Josei Jishin.
- [2011.10.22] Cheerfu11y (チアフリー)
- TV Programs
- [2011.04.02-] Up-Front Girls
- TV Dramas
- [2011.05.09] Getsuyou Golden ~Tsuri Deka 2~ (月曜ゴールデン～釣り刑事 ２～) (as Ogasawara Sachi)
-  Shokatsu Deka 8 (所轄刑事8)
- [2007.10.20] ハロプロエッグデリバリーステーション！02 (Hello! Pro Egg Delivery Station! 02)
- [2006.06.14] Tokito Ami Hatsu Live '06 Haru ~The Nakano Sampler~ (時東ぁみ初ライブ '06春 ～ザ・中野サンプラ～) (as backup dancer)
- [2007.11.21] °C-ute Cutie Circuit 2007 ~MAGICAL CUTIE TOUR~ (as backup dancer)
- [2006.10.05] Kenroh -KENROH- (剣狼-KENROH-)
- [2007.09.21] Ekubo ~people song~ (えくぼ～people song～)
- [2010.10.13-22] Cutie Musical "Akuma no Tsubuyaki" ~Akuma de Kyutto na Seishun Graffiti~ (キューティー・ミュージカル「悪魔のつぶやき」～アクマでキュートな青春グラフィティ～)
- [2011.03.09]-[2011.04.11] Worsal Theater Produce Jikan Souzoubu～Super Time Management～ (ワーサルシアタープロデュース 時間創造部～スーパータイムマネージメント～)
- [2012.04.20-26] Aru Jii-san ni Senkou o (あるジーサンに線香を)
- Furukawa Konatsu Official Blog (Mirror), Aa Joshi Gasshoubu ~Eikou no Kakera 2008~ Official Blog (Mirror) (No longer updated)
- Tomoiki Ki wo Uetai Official Blog
- Tomoiki Ki wo Uetai Profile
- Japanese Wikipedia: 古川小夏