- Name: Taguchi Natsumi (田口夏実)
- Nickname: Tagucchi (たぐっち)
- Birthday: July 21, 2000
- Birthplace: Saitama, Japan
- Blood type: A
- Height: 151cm
- Specialty: Hula hoop, eating lots of oranges
- Hobbies: Watching dramas
- Favorite Color: Pink
- Looks Up To: Wada Ayaka, Ogawa Saki, Suzuki Airi
- Hello! Project groups:
Taguchi Natsumi was introduced as a member of Hello! Pro Kenshuusei (formerly Hello! Pro Egg) on June 19, 2011 at a Shiodome AX event. She went on to participate in both the 2011 "Morning Musume 10th Generation Genki Jirushi" and 2012 "Morning Musume 11th Generation ~Suppin Utahime~" auditions, but failed to pass either.
On January 2, 2015 she was revealed to be part of a new eight member group, later named Kobushi Factory. The unit consisted entirely of trainees from Hello! Pro Kenshuusei, including Fujii Rio, Hirose Ayaka, Nomura Minami, Ogawa Rena, Hamaura Ayano, Wada Sakurako, and Inoue Rei.
- [2017.01.xx] Greeting ~Nomura Minami・Taguchi Natsumi~ (Greeting~野村みな美・田口夏実~)
- [2017.02.18] Nomura Minami / Taguchi Natsumi Mini Photobook "Greeting -Photobook-" (野村みな美・田口夏実ミニ写真集「Greeting-Photobook-」) (Nomura Minami, Taguchi Natsumi)
-  JK Ninja Girls (JKニンジャガールズ)
- TV Programs
- TV Dramas
-  Hyper Souji Chou! (ハイパーそうじ長!) (as Rina)
-  Hello Pro Kenshuusei no Tadaima Kenshuuchuu! (ハロプロ研修生のただ今研修中!)
-  UP-FRONT CHANNEL Recommend
- [2015–] Hello! Station (ハロ！ステ)
-  Pizza-La
- Radio Dramas
-  Week End Survivor ~Purge Game~ (Week End Survivor~粛清ゲーム~)
- She was introduced with fellow Eggs Yoshihashi Kurumi and Hamaura Ayano.
- Her closest friend within Hello! Pro Kenshuusei is Miyamoto Karin.
- She is a fan of Hello! Project group S/mileage. .
- On a rainy day she would draw pictures and read books.
- She would sing the song "Tsuugaku Vector" by °C-ute on a rainy day.
- Likes athletic festivals and jumping rope.
- Her best sport is basketball.
- Her favorite season is summer.
- Favorite flower is the rose.
- She was a back dancer for S/mileage Live Tour 2012 Aki ~Choi Kawa Banchou~.
- Her favorite Hello! Project songs are "KoiING" by Morning Musume and "OVER THE RAINBOW" by Buono!.
- Wrote in a magazine that her dream is to become a person everyone knows by name.
- Her favorite sport is badminton.