[2] With influences from AKB48 while she was young, she entered and passed the NGT48 audition for 1st generation members in 2015 during her 3rd year of high school.

[4] In 2017 she signed up to Ohta Production from her previous agency AKS,[5] and had been appearing on various television programs afterwards, even performing in a dedicated one-day solo concert in 2018.

[7] On March 31, 2024, she announced her marriage to a non-celebrity,[8] later revealed to be TV Tokyo director Yuuki Miyake [ja].

[9][10] On September 21, 2024, Nakai announced on the Fuji TV variety show All Night Fujiko, that she was pregnant with the couple's first child.

[11] Nakai announced on social media that she had given birth to their first child on January 29, 2025.