Noeru Otoshiro is a supporting character in Aikatsu!, known as the younger sister of Seira Otoshiro and a member of the idol unit Tristar in later storylines. She is portrayed as cheerful, energetic, and earnest, with a strong admiration for idols and a desire to shine in her own way. Noeru often serves to deepen the Otoshiro family dynamic and adds warmth and variety to the series' idol cast through her lively personality and performances.