"Idol" is a song by Japanese duo Yoasobi from their third EP, The Book 3 (2023). It was released as a single on April 12, 2023, by Sony Music Entertainment Japan, serving as the opening theme to the first season of the 2023 Japanese anime series Oshi no Ko. Written by Ayase and based on Aka Akasaka's short story 45510, "Idol" is a combination of pop, hip-hop, rock, and video game music with a complicated structure, and depicts the two-faced nature of a star in the Japanese idol industry. The lyrics delineate multiple different perspectives on the anime's central character, the idol Ai Hoshino, namely those of her fans, her fellow groupmates, and her own self. It additionally features shouts by B-boy group Real Akiba Boyz and gospel-like background vocals.
