I think some people might be put off by the mental image that the synopsis gives, imagining some cringey old men trying to act like youngins and doing all the things that you see in typical idol animes (often belonging to the otome genre), but that's not really the case. The pacing of the anime rather suits these old men, and if anything, it feels like a slice of life anime. Each episode they have some new concept to tackle, each character has their own shortcoming and something that they bring to the table, and while they overcome their new challenges, we get to see a little bit of their past, of their personalities, of their personal struggles.
I don't really think these are necessarily the type of characters you'd simp over or spend your life-savings on their gacha game, and the idol setting is also something that rather drives the plot forward, or gives some background setting to their story, rather than something that they go into detail about in the anime. The novelty of this anime in comparison to some other feel-good SoL anime is that the characters are men in their 30s (iirc) which offers some new perspective.
What really caught me and made me interested in this anime was the first episode - even though I am neither a man, nor in my 30s, I could empathize with the main character's struggles, and this feeling continued as we got to know the other characters of their group as well. While their stories are nothing unheard of, it's still enjoyable to watch, and I look forward to continuing this journey with them.
