IDOLiSH7 Second BEAT!

Following Idolish7's rise to fame, Riku becomes under pressure due his illness and fans' high expectations of him. His breath shortening after a performance when his fans demand an encore, they become disappointed that he doesn't come back. To let Riku lighten his stress while remaining a part of Idolish7, Iori becomes their center, which only causes tension between Iori's and Riku's biases. More sad truths are revealed when Tenn sees Riku's poor performance and insults him for disappointing his fans. Takamasa Kujo, Tenn's adoptive father shows up while more traumatic pasts linked to him come to light. Meanwhile, who appears to be Aya, Tamaki's long lost sister, shows up too and seems to have a dark secret of her own.

Synopsis from Anime News Network