Three Sword Style

Santōryū (literally: three sword style) is a way of sword fighting that deals with the wielding of 3 daito katana; One in each hand and one in the mouth. There are many different techniques for this sword style, including "Tatsumaki", "Onigiri" and "Hyaku Hachi Pound Hou". Roronoa Zoro, the Swordsman and first mate of the Straw Hat Pirate Crew is the world famous Swordsman who uses that style.

History
Zoro first started developing "Nitōryū", or, two sword style, when he first started learning the ways of the sword. Defeated by his rival Kuina 2000 times, this only drove him to become stronger and stronger. One day, he challenged Kuina to the two thousand first match, confident as usual. Only this time, he wanted to fight with real swords. Zoro fought with his usual Nitouryuu, as Kuina fought with her Ittōryū (One sword style). At the end of the fight, Kuina once again came out on top. That would be the last time that the two rivals ever fought each other, because the next day Kuina lost her footing on some stairs, fell, and eventually died, or in an edited version for younger viewers lost against an opponent and was wounded to the point where she could never again fight. When Zoro was told this he was devastated, and he asked his sensei to give "Wadō Ichimonji" to him (Wadoō Ichimonji is Kuina's sword) so that he can carry on Kuina's and his dream to become the greatest swordsman. It was because of this, that Zoro started learning Santouryu, and which later drove him to become an extremely powerful swordsman, and Santouryu to be an extremely powerful style.

Santouryu Techniques
Zoro's fighting style revolves around a fictional swordstyle that uses three swords. He can use three swords, two swords, and one sword styles. When he uses three swords, the third one is placed in his mouth. Several of his attack names are actually puns due to the way some of the Japanese words are combined together. When these words are pronounced together they can sound like a completely different Japanese word.

Santou-Ryuu Attacks
(三刀流, Three Swords Style)

These are attacks Zoro uses with three swords.