Eri Kitamura is a Japanese voice actress and singer. She was previously affiliated with Early Wing, but is now a freelancer. She is known for voicing prominent roles in anime and games such as Sayaka Miki in Puella Magi Madoka Magica, Saya Otonashi in Blood+, Keqing in Genshin Impact, Shizuku in New Game!, Darjeeling in Girls und Panzer, Uni/Black Sister in Hyperdimension Neptunia, Ranko Honjō in My First Girlfriend Is a Gal, Yuka Mochida in Corpse Party, Bea in Pokémon: Twilight Wings, and Miki Aono/Cure Berry in Fresh Pretty Cure!. In addition, she provided the voice for the Vocaloid voicebank CUL. She is known to be an amateur manga artist in Japan in her spare time.

Sayaka Miki is a fictional character from the 2011 anime series Puella Magi Madoka Magica. A girl with a strong sense of justice and a classical music fan, Sayaka is the childhood and best friend of one of the series' protagonists, Madoka Kaname. She highly respects and admires her upperclassman Mami Tomoe, an experienced magical girl that fights for justice, and aspires to be like her. Sayaka makes a contract with the messenger of magic, Kyubey, and becomes a magical girl to heal the arms of Kyōsuke Kamijo, a boy she has been infatuated with since childhood. Sayaka has appeared in several Puella Magi Madoka Magica media, including manga, a novel adaptation of the series, and video games.