Vigaku is the name relating to a musical track that has been used a number of time within the Dead or Alive series. For every appearance, it has been used as the character theme for Ein.
Vigaku
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Vigaku is the character theme for Ein, and is used in all of his appearances in the series. It is also his ending theme in all versions of Dead or Alive 2. The theme is later heard in the background at Johnny's Diner in Dead or Alive 5.
The theme is also optional in the Music settings in Dead or Alive 5 Ultimate, and can be selectable for any character and gameplay mode.
Vigaku Remix
A remix of the track, simply entitled Ein Remix, first appeared in Dead or Alive 2 Ultimate as one of the character themes for Ein. It is heard while the player is fighting against Ein in the Ray House.
It also appeared in Dead or Alive 4, renamed Vigaku Remix, when fighting against either Ein or Hayate in the Crash Club.