Prologue wa Ashitairo / Bye Bye Yell!

 is the fifth single released by Milky Holmes. It was released on August 29, 2012, and peaked at #50 on the Oricon single chart.

Single Information
Prologue wa Ashitairo was used as the opening theme for the game Tantei Opera Milky Holmes 2, while Bye Bye Yell! was used as its ending theme.

Single Information

 * 1) Prologue wa Ashitairo (プロローグは明日色)
 * 2) Bye Bye Yell! (バイバイエール!)
 * 3) Prologue wa Ashitairo (プロローグは明日色) (Off Vocal)
 * 4) Bye Bye Yell! (バイバイエール!) (Off Vocal)