Kotono Mitsuishi, a renowned Japanese voice actress and narrator, hails from Toda, Saitama, with affiliations to Arts Vision and Lasley Arrow. Her early life unfolded in Nagareyama, Chiba, where she spent her formative years. Upon completing high school in 1986, Mitsuishi embarked on a journey to hone her craft, enrolling in the prestigious Katsuta Voice Actor's Academy.
Mitsuishi's voice acting career took off in 1988 with her debut role as Tomoyo in the OVA Ace wo Nerae! 2. Her subsequent appearance as Usagi Tsukino in Sailor Moon, which premiered in 1992, catapulted her to instant celebrity status. The anime television series Neon Genesis Evangelion further solidified her reputation, thanks to her captivating portrayal of Misato Katsuragi. Additionally, her impressive performances as Murrue Ramius in both Mobile Suit Gundam SEED and Mobile Suit Gundam SEED Destiny in 2002 and 2004, respectively, cemented her status as a prominent figure in the voice acting world.