Shounen Hollywood: Holly Stage for 49 - Full Series Information, Trailer & IMDb Reviews
Watch Shounen Hollywood: Holly Stage for 49 online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.
It takes place at a fictional theater called Hollywood Tokyo in Harajuku, where members of the idol group "Shounen Hollywood" develop their talents with diligent work and studying.