[2] As a Hiragana Keyakizaka46 member, she performed the subgroup's songs on every Keyakizaka46 single between "Sekai ni wa Ai Shika Nai" (2016) and "Kuroi Hitsuji" (2019).

In 2018, she was appointed as center (lead singer) for the first time for "Happy Aura", a B-side for the single "Ambivalent",[3] and performed her first solo song, "Otoko Tomodachi Dakara", released on the album Hashiridasu Shunkan.

[6][7] She performed two more solo songs, "Nageki no Delete" on "Kimi Shika Katan" and "Docchi ga Saki ni Iu?"

[8] In February 2019, she became an exclusive model for the fashion magazine CanCam,[9] and appeared on the cover of the October edition with then-Nogizaka46 members Sayuri Matsumura and Mizuki Yamashita as the "Three Sakamichi Sisters".

On August 6, 2024, Katō announced that she would leave Hinatazaka46 after the promotions for the upcoming twelfth single have concluded, with plans to further her careers in acting and beauty and fashion.