Based on the Eroge by UNiSONSHIFT.

There are two primary worlds within the story of Nanatsuiro ★ Drops: the human world called Retroscena, and a magical world called Figurare from which the Stellar Spinners originate. There are currently two schools that teach magic within Figurare: Prima Pramu and Prima Asparas. According to Natsume, each year the two schools pick their top Stellar Spinners to send to the human world to capture seven stardrops in a goodwill competition to improve relations