Personal Opinion: I honestly just started watching this anime because I saw a clip from the show and thought it was absolutely hilarious. Every episode was like getting punched every 5 seconds because of a new joke and you think the jokes would get boring, but they just don't. Like, the slapstick comedy in this anime is a straight 10/10. This show is just one that just keeps giving. I did have some little things I didn't like but I'll discuss that in the section of my review that it pertains to.
Story: The story itself is super average and doesn't have much to it, but the way the season ends makes it look like there is going to be a season 2 that delves more into the actual plot. This season is more of the introduction to the characters and building a relationship between them, which I honestly liked because it stopped the show from being too much and overwhelming. The individual background stories for the characters were also pretty "ok" but the show makes it work and you can see how it affected their growth as the season progresses.
Animation: The animation was really good, the art style was great, I enjoyed the character designs, but there was one thing. In the show when they preform/sing the animation changes from 2D animation to a more 3D animation and it's super noticeable and sticks out. I honestly hated it because it killed the mood set, but it only happened when they sing so if you're not there for the "idol" aspect of the anime you can ignore it.
Sound: The actual background music and sound effects didn't really sick out to me, but that's ok. The voice actors on the other hand were amazing. Each character has a distinct voice and were able to vocally express themselves really well. The songs that the girls sang were pretty "basic" but like I was feeling the beat to them, like I had a good couple of head nods to the music while watching.
Character: They are prefect. I don't think there is anyone in this show that I didn't like. At first, I didn't like Lily (the blue haired girl), but after her background story and finding out she was an actual kid I was like, "Ok you get the pass on being the high-pitched cute character". I still don't know how I feel about her being so much younger than the other girls but by the end of the show I liked her too much to care. Another character that stood out was Mr. I wear my glasses indoors Tatsumi, he's really a love or hate character. He is literally the most unhinged feral man I have ever seen in an anime and I was living for it. Some people find him annoying and too loud and I agree, but also most of my favorite jokes came from him so I'm biased in liking him. All the other girls are really likeable and you're constantly wanting to cheer them on and honestly, they're such good characters.
Overall: I really liked the show and honestly, I would watch it again with a group of friends. If you're looking for an anime to watch when bored this is the show you're looking for. If they make a season two, I'm sure going to watch it. But in all the strongest point of this anime are the characters and comedy. So, if that's what you look for in a show this is a good anime for you.