- Name: Maeda Kokoro (前田こころ)
- Nickname: Koko (ここ), Maekoko (まえここ)
- Birthday: June 23, 2002
- Birthplace: Saitama, Japan
- Blood type: A
- Height: 166cm
- Specialty: Karate (2nd Dan Blackbelt)
- Hobbies: Watching Hello! Project videos, listening to music
- Looks Up To: Kudo Haruka, Sasaki Rikako
- Hello! Project groups:
- Hello! Pro Kenshuusei (2015–)
- Unnamed Group (2018–)
Maeda Kokoro participated in the Morning Musume 12th Generation Audition, but failed to pass. She was later announced as a member of Hello Pro Kenshuusei through the official website on April 27, 2015, alongside Ono Mizuho, Nakano Rion, Yanagawa Nanami, Akiyama Mao, Kanatsu Mizuki, Kasahara Momona, and Okamoto Honoka. She made her first live appearance and was formally introduced at the "Hello Pro Kenshuusei Happyoukai 2015 ~Haru no Koukai Jitsuryoku Shindan Test~" event on May 4, 2015.
Maeda was awarded the Judges Dance Award at the "Hello! Project Kenshuusei Happyoukai 2017 ~Haru no Koukai Jitsuryoku Shindan Test" event on May 5, 2017 for her performance of "Suki Sugite Baka Mitai" by DEF.DIVA. She won the Judges Dance Award for the second year in a row at the "Hello! Project Kenshuusei Happyoukai 2018 ~Haru no Koukai Jitsuryoku Shindan Test~" event on May 6, 2018, after performing "Silver no Udedokei" by Morning Musume.
On June 9, 2018 during the "Hello! Project Kenshuusei Happyoukai 2018 6gatsu ~Niji~" event in Tokyo, it was announced that Maeda would join one of two upcoming groups, featuring previously announced members Takase Kurumi and Kiyono Momohime, along with Yamazaki Yuhane and Okamura Minami. The group would be unveiled at a later date in 2018.
-  JK Ninja Girls (JKニンジャガールズ)
- Music Videos
-  °C-ute - "To Tomorrow" (as back dancer)
-  Juice=Juice - "Jidanda Dance" (as back dancer)
-  Nega Poji Poji (ネガポジポジ)
-  Bokutachi Karen na Shounen Gasshoudan (僕たち可憐な少年合唱団) (as Yoko and Yohan, team ♭Gumi)
-  Pharaoh no Haka ~Hebi Ou Senferu~ (ファラオの墓 ~蛇王・スネフェル~)
- Her favorite sport is karate.
- Prior to joining the Kenshuusei she was competitive in karate, participating in national tournaments 3 times and placing as runner up in a prefectural tournament.
- Her motto is "Game played in real earnest" (真剣勝負).
- Her father is an Italian chef.
- Has an older brother.
- Thinks her strength is doing everything without holding back.
- Believes her weakness is being afraid of things.
- Her favorite food is cheese, crushed red peppers, and soba.
- Her least favorite foods are tomato and green peppers.
- Favorite colors are white, pink, red, and yellow.
- Considers her charm points to be her brown eyes and husky voice.
- Her favorite Hello! Project songs are "Koi Dorobou" by Country Girls, "Honto no Jibun" by Buono!, "Tachiagirl" by S/mileage, "Nani wa Tomo Are!" and "Egao no Kimi wa Taiyou sa" by Morning Musume, and "Moshimo..." by Hello! Project_Mobekimasu.
- Her dreams are to debut within Hello! Project and become an idol with many activities that can make people smile.
- Her favorite genre of music is J-Pop (idols).