Shichika and Togame are three months into their search for the 12 Deviant Swords and this time they have arrived at the Sanzu Shrine in order to retrieve the Tsurugi sword. However, in order to obtain it not only must Togame find the original Tsurugi from one thousand identical blades but Shichika must defeat it's master Meisai Tsuruga in a one-on-one duel. To make matters even worse Kuizame Maniwa is also after the Tsurugi sword and soon makes his way to the Shrine.

Hakuhei Sabi challenges Shichika to a duel for possession of the Hari Sword and the rest of Shikizaki Kiki's Blades. Meanwhile, the Maniwa Ninja's Insect Squad attempt to kidnap Nanami and use her as a hostage against her brother. However, the Insect Squad soon discover that although Shichika is the head of the No Sword School, Nanami is far superior to her brother in combat and it doesn't take her long to kill all three of the Ninja sent after her.

Shichika and Togame are now five months into their quest and have just arrived in Satsuma where they hope to retrieve the Yoroi Sword. However, both the sword (which takes the form of a Western-style suit of armour) and its owner, legendary pirate Kanara Azekura (an expert in defensive combat) will pose a difficult problem for Shichika. Things then become even more complicated than usual when Azekura declares his love for Togame and the fight quickly becomes about much more than simply collecting another Deviant Sword.

Shichika and Togame find themselves in the harsh Ezo region in search of the enigmatic Itezora clan. Unfortunately they soon discover that the Itezora's village has been destroyed and the only survivor is an incredibly lonely and immensely powerful 11 year old girl who now possesses the Kanazuchi sword they are seeking. Things then take a dangerous turn when Kyouken Maniwa arrives to claim the Kanazuchi sword and get revenge for her fallen comrades' forcing an already injured Shichika to engage in his most dangerous battle yet.

Having returned to Owari, Togame's home, Togame and Shichika meet with Princess Hitei who tells them about the location of Shikizaki Kiki's workshop and the possible sword hidden there. Following the lead, although distrusting of it, the two go to the location, Lake Fuyou accompanied by Emonzaemon. Upon their arrival, Emonzaemon departs and leaves Togame and Shichika to deal with Bito Kanzashi. While away, Emonzaemon tracks down Umigame Maniwa and reveals that he is the sole remaining heir of the Aioi Corps, a village of ninjas that were wiped out by the Maniwa Corps 170 years ago. Having told him this, he engages Umigame in battle and defeats him completely and effortlessly using Aioi Kenpo.

Togame and Shichika travel to the Shinou Issou School to take on its master, Zanki Kiguchi, for possession of Outou Nokogiri. Being a sword instructor, Zanki is bothered by Shichika's style and refuses to fight him until he receives training at swordsmanship. She offers to instruct him and the two begin a ten day training regimen, much to Togame's chagrin. Meanwhile, the Maniwa Corps are able to retrieve the most poisonous blade of all, Dokutou Mekki. Before they can leave with the sword, Emonzaemon arrives with the intention of assassinating Houou. Penguin and Houou flee while Oshidori stays behind, only to be gunned down with Entou Jyuu after putting on an impressive battle.