The core of the episode is the Kessoku Band's high-stakes audition at Starry to prove they are ready for a live show.
You can find the full Episode 5 Reaction on YaBoyRoshi's YouTube . The Plug - YaBoyRoshi Bocchi the Rock! Ep 5
This episode introduces the "hard love" dynamic where Seika acts as the tough critic to push the band toward professional growth. The core of the episode is the Kessoku