名探偵IAたん FILE 02 (Meitantei IA-tan FILE 02)

IA-tan, The Master Detective: File 02 is a song sung by ONE Akasaka, Sasara Sato, Tsudumi Suzuki, Miku Hatsune, Maki Tsurumaki, and Yukari Yuzuki. It is the two-hundred-and-seventy-third track, the two-hundred-and-seventy-fourth track, and the two-hundred-and-seventy-fifth track in Other Vocaloid Songs 129: Mostly ONE.