Vien is a joyful girl, daughter of an aristocrat. She always plays with her friends at the Rainbow Hill, where the legend occurs that when you sleep with flowers of seven different colors below your pillow, you will dream of your destined lover. One day, Vien and the group spotted a lonesome boy named Adrian. Vien's and Adrian's fates were entwined as they fell in love with each other soon. Alas, what awaits them when Adrian had to leave the place to be groomed to become a Duke in another town? Will they ever meet again? Will everything stay the same even after they have grown up?

Niji no Densetsu was published digitally in English as Legend of the Rainbow by Media Do International/K.K. HarperCollins Japan from September 24, 2019 to February 11, 2020.