Nao Kosaka

About Nao Kosaka

Nao Kosaka was born on September 7, 2002, in Osaka, Japan, and grew up with her parents and an older brother, a fan of Keyakizaka46, which inspired her to audition for the group. Of Japanese descent, her early interest in performance was sparked by watching Hiragana Keyakizaka46’s 2017 Zepp Namba show. Known as Nao Kosaka, with nicknames like Kosakana, Koshakana, and Kosha, she joined Hiragana Keyakizaka46’s second generation on August 13, 2017, debuting with “No War in the Future,” a B-side to Keyakizaka46’s “Kaze ni Fukarete mo.” After the group rebranded to Hinatazaka46 in February 2019, Nao became the center for their debut single “Kyun” and held this role for the first four singles and “Boku Nanka” (2022), making her the member with the most center roles in the group’s history. Her music career includes tracks like “See Through” (duet with Miku Kanemura) and “Sekai ni wa Thank You! ga Afureteiru,” plus acting roles in the 2019 film Kyōfu Ningyō as Yuri Hirai, the 2021 film Jump!! The Heroes Behind the Gold as Noriko Kobayashi, and the 2020 drama Dasada as Sada Yuria. She took a health-related hiatus in June 2021, missing Hinatazaka46’s sixth single “Tteka,” but returned as center for “Boku Nanka” in March 2022. In 2024, she joined the taiga drama Dear Radiance as Sai’in no Chūjō and played Rin Arikawa in All of Tokyo. She was the center for Hinatazaka46’s 14th single, “Love Yourself!” in April 2025.

Nao’s sports background includes middle school volleyball, enhancing her athleticism and stage presence. She debuted on the runway at GirlsAward 2018 Spring/Summer and was an exclusive model for Seventeen from May 2018 to November 2024, joining Non-no in March 2025 to project a mature image. Her photobook, Kimi wa Dare? (June 29, 2021), sold 166,876 copies, topping Oricon’s 2021 photobook rankings. A dinosaur enthusiast, she was a Sony DinoScience ambassador in 2021. Her TikTok presence is via Hinatazaka46’s account (@hinatazaka46), featuring performance clips, while her Instagram, linked to “Kosakanatops,” shares modeling and group content. She has no significant solo YouTube presence. At 5’4” (163 cm), Nao’s youthful, charming appearance is praised, with no details on measurements, breast size, surgeries, tattoos, or piercings. Fans admire her expressive performances and dinosaur love, earning her “Kosakanatops.” No information details her sexuality or relationships; she is reportedly single. Her net worth is $1.5 million, from music, modeling, acting, and endorsements like Sony Sompo. No personal controversies are linked to her. As of July 2025, Nao hosts Quest For The Future, models for Non-no, acts in dramas, and threw the ceremonial first pitch at the Yokohama DeNA Baystars vs. Hanshin Tigers game on July 6, 2025. She remains close with Hinatazaka46 members Miku Kanemura, Hinano Kamimura, Akari Nibu, Konoka Matsuda, Hiyori Hamagishi, Shiho Kato, Kyoko Saito, Kumi Sasaki, Mirei Sasaki, Mei Higashimura, Hina Kawata, Nao Nagasawa, Mikuni Takahashi, Yoko Shigeno, Suzuka Tomita, Marika Kono, Yuka Kageyama, Marie Morimoto, Sarina Ushio, Ayaka Takamoto, and Miho Watanabe, and former Keyakizaka46 members Yurina Hirate, Neru Nagahama, Risa Watanabe, Rika Watanabe, Minami Koike, Nana Oda, and Manaka Shida.

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