Étoile Sunset or Sunset Star(サンセットスター) is a pop type brand with an unknown designer while the muse is Kiari Natsuki. It debuts in an unknown episode of Aikatsu! Next Melody and has yet to be determined when the DCD debut is. Étoile Sunset is also the Sun or Daytime version of Lune Symphonia.
"When the day ends, it ends with a beautiful sunset and then, the stars come out along with the Moon. Without the Sun, the Moon cannot shine and without the Moon, the Sun will we alone. Only at a sunset, shall they meet." - Étoile Sunset's introduction