Box set release of the greatest hits from Mari Sono including her debut singles "Aitakute Aitakute" and "Yume wa Yoru Hiraku" plus covers and more for the ultimate Mari Sono compilation released on the fortieth anniversary of her debut! Includes the albums "Mari no Single Collection Vol. 1," "Mari no Single Collection Vol. 2," "Mari no Single Collection Vol. 3," "Mari-chan Kayo Hit wo Utau," and "Mari-chan no a la Carte" for a total of five discs with deluxe booklet housed in a makeup-style case.