Hanon is the Mermaid Princess of the South Atlantic Ocean and keeper of the aqua pearl. She is Lucia's best friend, but fights with her like any teenage girl. Unlike Lucia, Hanon goes up to land to escape water creatures. She is perky and feminine and a bit more worldly than Lucia, although she tends to be lazy in cleaning. This worldliness is evidenced by many of her actions—especially by her romantic pursuit of her music teacher, Tarō Mitsuki. In the Pure season, she develops an interest in a boy, Nagisa.