The One-Day Manager Audition is a Starlight tradition in which a first-year idol auditions be the temporary manager of the top ranking idol of Starlight Academy. The audition was held in Episode 2 and Episode 102 with Idol Activity! and Let's Aikatsu! as the featured songs, respectively.
- Both of the songs used for the auditions were the image songs for their respective generations.
- Coincidentally, the winners of the auditions were both cool-type idols who auditioned alongside a cute-type idol.
- In addition they were the roommate of the idol they competed with.