Mahou no Shimai Lulutto Lilly

Fuu and her sister Rui had a profound bond, but time disturbed it. One day, Fuu found a mysterious spaceship that provided her with some magical powers, and at the same time, Rui got some powers to be an idol too. With these magical powers, they dream of being adult selves, but only for one year and in secret. Without knowing about each other, they begin their idle activities.