Idol

is a song by Japanese duo Yoasobi from their third extended play (EP), The Book 3 (2023). It was released on April 12, 2023, through Sony Music Entertainment Japan, serving as the opening theme of the Japanese anime series Oshi no Ko. Written by Ayase and based on Aka Akasaka's short story "45510", "Idol" is a pop track with hip-hop elements, depicting the two-faced nature of a star in the Japanese idol industry, as well as perspectives on the anime's character Ai Hoshino from her fans, her B-Komachi's bandmates, and herself. Naoya Nakayama directed the accompanying animated music video for the song, which premiered on April 13 and exceeded 100 million views in a month, the fastest among Japanese acts.