Nanae Kojima is a Japanese voice actress born on April 21, 1998, in Sapporo, Hokkaido. She is represented by the agency Just Pro and is known by the nickname Kojinana. Before her voice acting debut, Kojima trained in vocal music, participating in and winning awards at student music competitions, with a background in opera and classical singing.

Kojima made her voice acting debut in 2022, voicing Misaki Jinguji in the game Puraore! PRIDE OF ORANGE. In the same year, she landed her first main television anime role as Yuina Rokkatei in the comedy series Teppen—!!!!!!!!!!!!!!! Laughing 'til You Cry, a role specifically mentioned by the user. Also in 2022, she had a minor role as Friend C in the anime Engage Kiss.

Following her debut, Kojima continued to build her career with various roles. In 2023, she appeared in Chiikawa as one of the Grey Children, and as a侍女 in Sacrificial Princess and the King of Beasts. A significant breakthrough came in 2024 when she was cast as Rhein Kraft in the popular multimedia franchise Uma Musume Pretty Derby. This role led to her active participation in high-profile live events for the franchise, including the 5th EVENT ARENA TOUR GO BEYOND and the Twinkle Circle! tour across five cities, where she also took on hosting duties. Her other anime roles from 2024 include Stephanie in The Most Powerful Cheat Death Skill and minor roles in other series.

Beyond anime and games, Kojima has demonstrated her versatility by appearing in several reading dramas and stage plays starting in 2024. She also runs her own YouTube channel, Kojinana Channel, where she engages with fans through singing, drawing, and chatting. Her musical background is evident in her participation in character songs, most notably for the Teppen!!!!!!!!!!!!!!! series and numerous WINNING LIVE albums for Uma Musume Pretty Derby. In September 2025, Kojima announced her departure from her agency, Just Pro, to continue her career as a freelance voice actress.