She is an exclusive model for the women's magazine non-no[2] and a former member of the female Japanese idol group Sakurazaka46.

[3] She was part of the subgroup Aozora to Marry (青空とMARRY) along with Rika Watanabe, Akane Moriya, Yūka Sugai and Manaka Shida.

As part of the subunit, Watanabe made appearances in three songs: "Aozora ga Chigau" from Sekai ni wa Ai Shika Nai, "Wareta Sumaho" from Fukyōwaon, and "Namiuchigiwa o Hashiranai ka?"

[4][5][6] On October 8, 2016, she made her runway debut at the fashion and music event Girls Award 2016 Autumn/Winter, held at the Yoyogi National Gymnasium.

[14] Among the members, she is close with the Rika Watanabe who comes from the same prefecture and is called W-Watanabe[15] or BeriBeri (べりべり) [16] by their fans.

They were known as one of the famous pairs in the group, dubbed as Za Kuuru or The COOL (ザ・クール), ShidaRisa (志田理佐), and MonaRisa (モナリサ).