oshi no ko is an interesting anime; i love when idol stories delve into the darker side of the industry, so i was excited to see where this went (even with knowing the twist beforehand)
in fact, after i watched what there was of the anime at the time i thought the story was good enough to just go and read the manga, since there was the mystery aspect to it. but then i got deeper to the incest shit with the siblings. it was absolutely not needed for the plot at all, and even if it was, it just weirds me out. usually i can ignore *some* "anime bs" but it was leaning way to far into it for me.
the op still goes hard tho i cant lie. just watch the first episode/movie thing and pretend that's all there was, at least w just that you can ignore some of the weirder shit.