|Nickname||Hiyotan (ひよたん), Tanchan (たんちゃん)|
|Birthdate||September 28, 2002|
|Current Age||20 Years Old|
|Agency||Seed & Flower|
|Social Networks||Official Blog / Instagram / SHOWROOM|
|Idol Career Info|
|Debuted||August, 2017 / 2nd Generation|
- Favorite Keyakizaka46 member: Nagahama Neru
- Favorite song: Dare Yori mo Takaku Tobe!
- Charm Point: Wide forehead
- Favorite Foods: Shoyu ramen, tomatoes, cheese. Her favorite flavor of shaved ice is melon or strawberry, with condensed milk
- Disliked Foods: Bell peppers, bitter melon, mushroom, squid, octopus, shrimp, lettuce, liver, green peas
- Favorite Colors: Pink and light purple
- Favorite Animal: Dog
- Her mother encouraged her to participate in the second Hiragana Keyakizaka audition in 2017 after Hiyori failed a modeling audition and fell depressed.
- She is the youngest member of Hinatazaka46 2nd Generation.
- She has a sister 2 years older than her.
- She has a toy poodle named Ciao-kun.
- Her parents debated between naming her “Hiyori” or “Hinata” when she was born.
- She likes slime toys.
- She likes Takarazuka Revue. She dressed in the Takarazuka male role (otoyaku) style for a Valentines Day segment on Hinatazaka de Aimashou.
- She prefers staying indoors. It is unusual for her to go out on her days off.
- She says she is bad at winking.
- She did not play any sports growing up.
- She learned classic ballet since she was 3 years old.
- She said that when she passed the Hiragana Keyakizaka audition, rather than feel happy she felt worried that she wouldn't be able to balance her schedule and practice ballet as much.
- Indeed, as Hiragana Keyakizaka activities began to increase she was not able to attend ballet class as often. Seeing this, her mother called the ballet school and cancelled Hiyori's enrollment without consulting her. Hiyori was so upset that she ran out of the house. She says to this day she regrets not being able to tell the ballet teachers herself that she was going to stop attending.
- She ranked last in the first Hinatazaka46 Academic Ranking test on Hiragana Oshi. She was given the role of "Baka Center". However, she performed much better in the second Academic Ranking test, finishing at 13th place.
- She claims her poor performance on the first test was due to sleepiness. However, she also acknowledged that as a student she spent more time practicing ballet than studying.
- She was on hiatus from June 21, 2019 to January 7, 2020 due to poor physical condition.
- She is close friends with Sasaki Mirei. On a segment on HINABINGO!, she chose Mirei as her ideal big sister and Mirei chose her as her ideal little sister.
- Mirei often texted Hiyori while Hiyori was on hiatus. Hiyori claims that if Mirei had not reached out to her so often, she may have decided to graduate from Hinatazaka46.
- She was junior high school classmates with AKB48 Team TP member Oyama Mirei.
- She was unable to participate in Hinatazaka46’s first solo concert in Tokyo Dome due to contracting COVID-19.
- Hiragana Keyakizaka46 2nd Generation → Hinatazaka46 2nd Generation
- Sonna Koto Nai yo
- Kimi Shika Katan
- Boku Nanka
- Tsuki to Hoshi ga Odoru Midnight
- One choice
- Am I ready?
- NO WAR in the future (Kaze ni Fukarete mo)
- Hanbun no Kioku (Glass wo Ware!)
- Happy Aura (Ambivalent)
- Kimi ni Hanashite Okitai Koto (Kuroi Hitsuji)
- Dakishimete Yaru (Kuroi Hitsuji)
- AYUMI (あ ゆ み) (2018)
- Oddtaxi Kongouseki wa Kizutsukanai (オッドタクシー 金剛石は傷つかない) (2023)
- Keyakitte, Kakenai?
- Hiragana Oshi (2018 – 2019)
- Hinatazaka de Aimashou (2019 - )
- HINABINGO! (2019)
- Self-Documetary of Hinatazaka46 (2021)
Hamagishi Hiyori (2019 - Kuroi Hitsuji)
Hamagishi Hiyori (2018 - Hashiridasu Shunkan)
Hamagishi Hiyori (2018 - Glass wo Ware!)
Hamagishi Hiyori (2017 - Kaze ni Fukarete mo)