Utsukushii Hire

 (美しい鰭) is the 46th single by Spitz. It.

The title song will be featured as the theme song for the movie Detective Conan Black Iron Submarine, planned to be released in Japan on April 14, 2023.

Tracklist

 * 1) Utsukushii Hire (美しい鰭)
 * 2) Inori wa Kitto (祈りはきっと)
 * 3) Akehono (アケホノ)