Takajō auditioned for
AKB48 and was chosen in the group's sixth generation, also known as the third generation of Kenkyusei (trainees). She debuted on August 23, 2008, in the concert "Live DVD wa Derudarou kedo, Yappari Nama ni Kagiruze". On October 19, she substituted for
Haruna Kojima on the Team A Fifth Stage, "Renai Kinshi Jorei". On December 29, Takajō was promoted to AKB48's Team A; she only spent 71 days from theater debut to full member, and it was the fastest promotion in AKB48 history at the time, until
Rion Azuma from
SKE48 was promoted in 2013. Takajō's first A-side with AKB48 was in 2010 for the single "
Ponytail to Shushu". In the 2010 AKB48 general elections, she placed 13th and landed a spot on the title track for "
Heavy Rotation". She and AKB48 members
Yuki Kashiwagi and
Asuka Kuramochi formed a sub-unit, "
French Kiss" and the group released the single "Zutto Mae Kara" which peaked at number five on the Oricon charts. On August 24, 2012, the first day of its Tokyo Dome concert series, AKB48 announced a reorganization of its teams. Takajō and
Haruka Nakagawa were sent to Jakarta to help AKB48's sister group
JKT48. On April 28, 2013, it was announced that she would hold a concurrent position in AKB48 Team B. On February 24, 2014, during the Grand Reformation Festival, it was announced that she was released from her concurrent positions in JKT48. In 2015, she was transferred to AKB48 Team K. On December 15, 2015, at the group's
AKB48 Kōhaku Uta Gassen event, she announced that she would be leaving the group. On February 23, 2016, AKB48 gave her a graduation ceremony. She officially graduated from AKB48 on May 1, 2016. She left Watanabe Productions and became a freelancer the next day, May 2. On November 20, 2017, she announced her affiliation with the film production company and talent agency Is.Field. == Personal life ==