Aikatsu! Secret Story

One day, top designer Tsubasa Sena is suddenly visited by a rich girl Tsubaki, who expects him to design an exclusive dress for her at any price. However, Tsubasa refuses her with the reason "premium dress are only for idols". To achieve her goal, Tsubaki decides to transfer to the top idol school, Starlight Academy to become a real top idol and impress Tsubasa... Aikatsu! GO! GO! GO! is the last "arc" of Ciao's manga serialization of Aikatsu!. This arc features the manga original character Tsubaki Saionji. (Source: Aikatsu! Wikia)

The series takes place at Starlight Academy, where girls train to become idols and take part in various auditions. A girl named Ichigo Hoshimiya becomes inspired by a performance by top idol Mizuki Kanzaki and enrols in Starlight Academy alongside her best friend, Aoi Kiriya. Along with their classmate, Ran Shibuki, Ichigo and Aoi spend each day training for auditions and aiming to become top idols.

Ichigo Hoshimiya and her friends are students at Starlight Academy, where they do Idol Activities aiming to become the Top Idol and make people happy.