Samehada

Samehada (shark skin) is sword that used by Kisame Hoshigaki.Kisame was one of the Seven Swordsmen of the Mist, a group of violent ninja that use particularly large swords in battle.Samehada is covered in scales that can absorb untold amounts of an opponent's chakra, and only allows Kisame to wield it. Kisame himself has massive amounts of chakra, enough so that a clone created by the Akatsuki that held only 30% of his power contained an amount of chakra comparable to Naruto when using the Nine-Tails' chakra.