Name: "Kaisa Debai"
Description: Its a Nodachi-class sword, with a black hand-grip with white cords strapped on it in an X-pattern. The blade is a dark silver and shines a lot. Its sheath is a black with some gems ornamenting it.
Special abilities: Its very sharp and very endurance. It also has great heat resistance. The most important trait of it though is that its tip is coated with Kairouseki, making it an effective tool against Devil Fruit users.
History: It was created by a famous Sword forger. At some unknown point in time, Hanashi Suigo obtained it, possibly due to his high rank. He has that sword for at least 15 years.