SPOILERS AHEAD, READ AT YOUR OWN DISCRETION!
If you haven't played Mystic Messenger completely, you might read something that will reveal to you the complete story of the game. So please pay attention!
"Mysterious Clues" is a mystery-themed soundtrack from the original soundtrack CD. It usually plays when either Unknown or Rika is involved, or when there are bad ends, such as Yoosung's Bad Ending 1.
||Mysterious Clues ver. 2