[7] In 2014, she voiced Jamie Hazaford in Argevollen,[8] Emi Murakami in Jinsei,[9] and Kanon Chiyoda in The Irregular at Magic High School.
[10] She played the roles of Ais Warenstein in Is It Wrong to Try to Pick Up Girls in a Dungeon?,[11] Hisako Arato in Food Wars!
[13] In 2016, she played the roles of Kazuha Shibasaki in Girlish Number, Non Toyoguchi in Keijo, Madoka Amano in Active Raid,[14] and Ai Ninomiya in Amanchu.
[17] She voiced Muramasa Senju in Eromanga Sensei,[18] Marie Bell Breguet in Clockwork Planet,[19] and Kuro in Restaurant to Another World.
[26] On May 2023, her talent management agency announced Ōnishi would temporarily reduce her work activity due to health issues.