Shounen Hollywood: Holly Stage for 49 - Full Series Information, Trailer & IMDb Reviews
Watch Shounen Hollywood: Holly Stage for 49 online. Maybe available on Youtube, Netflix, PrimeVideo, Hulu, Disney and other legal streaming platforms.
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.