- Who
- Mai Kuraki
- What
- 21 total number
- Where
- Japan ()
- When
The most theme songs sung by the same artist for an animation series is 21, sung by Mai Kuraki (Japan) for Detective Conan aka Case Closed, broadcasted by Yomiuri Telecasting Corporation and Nippon TV as of 18 July 2017.
The 21 theme songs have been released on CD from 26 April 2000 to 12 April 2017. Detective Conan aka Case Closed is a Japanese TV animation series based on a comic book series, broadcast by Yomiuri Telecasting Corporation and Nippon TV since 1996 in Japan.
