Cowboy Bebop - Tsuioku no Serenade [NTSC-J] [SLPS-25551] Cowboy Bebop: Tsuioku no Serenade (カウボーイビバップ 追憶の夜曲(せれなーで) Kaubōi Bibappu: Tsuioku no Serenāde, lit. "Cowboy Bebop: Serenade of Reminiscence") is an action/fighting video game from Bandai, released exclusively in Japan on August 25, 2005. It has an original story based on the anime series Cowboy Bebop. The game follows an original story set in the Cowboy Bebop world. Events center around a search for a space pirate's treasure, a mysterious song called Diamonds and a mysterious organization that stands in the way of the Bebop's crew.