Kaken

The Kaken are a pair of sabers wielded by Vista as his main weapons.

Appearance
The Kaken are a pair of sabers with purple hilts that are visibly distinguishable from another by their different sheaths.

Abilities
The Kaken appear to be extremely durable, being able to clash with one of the strongest swords in the world, Yoru.

Anime Only

 * Rose Rondo: An anime only technique, Vista jumps backwards and swings his swords, launching several red rose petals that fly towards the opponent. The effect of the rose petals remains unknown as the attack was blocked. It was first seen used against Mihawk in a filler scene of the anime and was once again used to stop Akainu's magma. In One Piece: Pirate Warriors 2, Vista rapidly slashes foes while giving off rose petals ending with a hurricane slash.

Trivia

 * They are the source of Vista's epithet.