Five Letters

 is a song by Poppin'Party.

The full version of the song is included in the mini-album Seishun To Be Continued, which was released on May 31, 2023.

It is the gift song, as well as the main song for the event When The Bakery's Lights Go Off.

It was written by Nakamura Kou, and composed and arranged by Fujima Hitoshi.