[5] On August 13, 2010, Kitahara debuted as a voice actress in the anime series Gakkō no Kowai Uwasa: Shin Hanako-san ga Kita!!.

At the end of the year, she was a cast member on the first season of the reality television show Terrace House: Boys × Girls Next Door, where she lived together with five other people.

In April, SKE48 announced it was ending Kitahara's concurrency with the group, which leaves her only with AKB48's Team K.[12][13] As a member of the sub-group Not Yet, she is credited for the lyrics of "Guilty Love" (part of the Suika Baby single) Kitahara starred in the Japanese horror movie Joker Game, released on December 22, 2012.

She also appeared in the drama remake, Kazoku Game, which aired on Fuji TV starting April 2013, as a girlfriend of a son of a prominent family member.

[16] On July 11, 2024, Kitahara announced through her official social media account that she is expecting her first child, which is said to be due within this year.