Eru Kusaba (草葉える, Kubasa Eru) is a character in Maesetsu!: Opening Act.
Eru has long blond hair in a ponytail and emerald green eyes. She wears a navy button-up jacket, over a white dress shirt and a red bow, a black skirt, and brown penny loafers. She also wears a taffy pink scrunchie around her left arm.
In contrast to her partner's persona, Eru is exuberant and light-hearted, admitting she likes to go at her own pace.