"The eternal elementary school student," Harada Aoi is the youngest first generation member and she is known for her young appearance and childish nature. She took a one year break from activities, starting May 2018, in order to focus on her studies for the last year of highschool and enter a good university. She resumed her activities on July 5, 2019 where she did a surprise come-back at Keyaki Republic. After returning she had noticably matured both in mind and body. Since returning she has been taking the role a