When the world is in a time of disorder, the Great Katana Kusanagi will reappear
and wait for the return of the savior. The savior, a descendent of Takeru Yamato
should have a Diamond Crest on his arm.
The Savior has 4 subordinates, and they all have a Diamond Crest on their body.

‘Sorry for cutting you off! For world’s sake, the sword howls!’