Kotori Otonashi is a beloved character from The Idolmaster series. She works as an assistant at the 765 Production office, a talent agency for aspiring idols. Kotori is known for her gentle and caring personality, often providing emotional support and guidance to the idols as they pursue their dreams. Despite her calm demeanor, she has a playful side and occasionally daydreams about romantic scenarios. Throughout the series, Kotori serves as a mentor and big sister figure, playing a vital role in the development and success of the idols.