Yuniko Ayana is a Japanese anime screenwriter and manga author. After making her debut in The Tower of Druaga, she began serving as a script supervisor for several anime series and franchises, including Kin-iro Mosaic, Girls Beyond the Wasteland, The Seven Deadly Sins: Signs of Holy War, BanG Dream, The Idolmaster SideM, Given, D4DJ, and The Magical Girl and the Evil Lieutenant Used to Be Archenemies.