Oshi no Ko - this an anime that deals with the problems in industry. From fans that go to extreme and end up harming people. One episode, they talk about the production behind, that everything was done for selling merchandise (more valuable than the show itself). The disrespect that exist towards creators and changes to storyline to help x toy or x actor.
Series that have no value, besides the enfacement of actors; the school of celebrities and how they deal with celebrity. Then there is the status/ranking that makes some actors feeling superior.
The fake reality shows... The idols vs actors career and how the people try to accomodate.
Is this horror ? No. It's not. Yet it's more horrific than you can imagine if you think deep down. It's horrible to think people, thousands go through this. In Korea & Japan.
Is it a good anime? Yes. Undoubtly. It's one of the best anime of the year, probably one of the contenders. 8.75 rating out of 10. Go Watch it