Side Note: I am in no way an Idol fan, this review will be from a "newcomer" to the genre. I watched this last year when I was starting to get into Anime and remembered a few memes of Love Live Sunshine.
[STORY:]()
Well, there is no real Story more of a Goal instead.
The goal is so make an Idol group as good as the μ'. Apparently there was a few prequels to this showing us the formation of that group as well and from what I'm hearing this version is basically a carbon copy of that one but with a different cast so you know, take that as you will.
Here's a little summary of the event that happen in the show:

[CHARACTERS:]()
Love Live Sunshine has 9 MAIN CHARACTERS that is a lot.
Luckily I can sum up most of them together, I will be mentioning the few odd ones tho.
The characters are so god damn happy it hurts, though a lot of them at the start refused to join and were timid. Which got smoothed out later on. There was drama but nothing to significant. There are 2 characters which pop into my memory better than the rest.
Yoshiko Tsushima - She believes she is a demon of some sorts, reason I remember her is cause she breaks the mold and is actually quite unique. She must have watched GabDrop and liked Satania a lot.
Dia Kurosawa - She stands out as well because she was so god damn hesitant to join from her past trauma. Again something to break the mold.
[ART/ANIMATION:]()
The animation is...well as I said with many other SOL shows, is quite generic. Its smooth when it needs to be but overall isn't anything groundbreaking. The Art style is...very bright. I understand why though, this is supposed to be "Super Fun and Happy Show", I mean even No Game No Life had incredibly bright art style so I guess I can't dig much into this, ~~sadly xd~~
They do use CG for their perfomances. The CG is, well CG. Not as horrible as Arifureta Dragon Level, this one is actually watchable. Though I do with they would draw it out and make more details since this is the main part of the show.

[MUSIC:]()
The music is not bad actually, I enjoy quite a few pieces. The OP is quite catchy. Of course its not something I would listen to without headphones or even on a daily like I do with MYTH & ROID for example but you get the jist, right?
[OVERALL OPINION:]()
Love Live Sunshine, I can't compare it to the previous ones but I can give my opinion on it as a "New Comer" to this genre.
I understand why people would like this genre and spend their life on it, afterall I also enjoy me some CGDCT/SOL.
The issue I have (apart from not being interested in stories and characters like these) is that when you watch one season you watched all of them, I think this is the main reason why I don't get more into this genre.
After all of the things I heard about S1 of Love Live and even the other Idol Shows I just think to myself "B-But I already watched this." even when I was watching the idol "parody" Zombieland Saga I was like "Damn, the new Love Live season looks sick kek". There is also the fact that I can't really relate to any of the character, most of them are so god damn happy, even in K-On I can relate to the character cause they are all lazy like me xd
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