Ep. 4: The girls return to find no time passed while investigating a mysterious academy and encounter new idols.

4

Raki, Aine, and Mio return to Star Harmony Academy after spending several days at Four Star Academy, yet no time has passed back home. The trio discusses their adventure with Maika and Ema, who become eager to visit the mysterious institution. However, no one recognizes the school or can locate any information about it. The situation shifts when Maika and Ema attend a Honey Cat fan fest, where two mysterious idols appear. These newcomers introduce themselves as Hinaki Shinjo and Juri Kurebayashi from Starlight Academy, causing the atmosphere to intensify significantly as the girls face this unexpected development.