A young martial artist, and head of the Kyoutoryu style, living with his sister on a desolate island. At the start of the series he is approached by Togame, an underling of the shogunate, to help her find the Twelve Perfected Deviant Blades. He falls in love with her and agrees.
Does Not Like Shoes: Even while he is covering his chest, his feet are still bare. As he carries Togame through a blizzard, while she whines about how cold it is. And then life-threatening Hilarity Ensues.
Sacrificed Basic Skill for Awesome Training: He spent his entire life training under his father to master Kyotoryuu on a deserted island. At the start of the series he has absolutely no knowledge of the outside world and can't even pick up the differences between other people. Another side effect of Shichika's training is that he is completely unable to wield swords.
Scars Are Forever: He retains some of the scars received in his final battle with Emonzaemon, particularly the one over his left eye.
Self-Made Orphan: Killed his own father for unexplained reasons. Episode 7 implies it was to protect Nanami... not that she would need it.
Skilled, but NaÔve: He's spent his entire life on a remote island cut off from civilization with only his sister and his father. While he did receive 20 years of training in Kyotoryuu, a powerful fighting style that is essentially "swordsmanship without a sword", he lacks actual battle experience.
Willfully Weak: He's given orders by Togame to protect the swords, Togame, himself, and himselfnote It Makes Sense in Context, which proves to make some of the fights more difficult. In the last episode, he is under no such restrictions, and shows exactly how powerful he is by destroying all twelve swords. How much the restriction to protect himself mattered is evident during his duel with Emonzaemon.
Ill Girl: Due to her unnatural strength, although she can never die from it.
Lack of Empathy: She is not a particularly caring person when it comes to mooks.
Made of Iron: Despite her weak body, she is surprisingly resilient. The prime example would be her death. After taking a full-on Shichika Hachiretsu Kai, Akutou Bita (the Deviant Blade sustaining her life) was pulled out of her chest, leaving a gaping hole in it. She then gets up and starts using her full strength, damaging her body even further. She manages to fight with her little brother evenly for a short while after that, but dies when she is hit by Shichika's self-titled ultimate move a second time.
Multicolored Hair: Pink blotches for highlights. The artist(s) chose to use pink rather than a lighter green.
Villain Protagonist: Had shades of this in episode 4, but becomes utterly if not pure evil in episode 7 if not for her tragic backstory to redeem her slightly.
Willfully Weak: Despite being physically weak and ill, Nanami starts the series able to easily defeat her brother, who defeated the official Greatest Swordsman in Japan. Turns out, she can also copy any skill she sees, including super-strength, spontaneous claw growth, and walking on water. Then it turns out that she has inhuman resilience and can't die no matter how sick or poisoned she becomes. Then it turns out she's acquired one of the Deviant Blades, which cures her weakness and low energy. And then it turns out she uses others' skills so she can be weaker, as her instinctive combat skills are utterly perfect!
Yamato Nadeshiko: With long black hair and a yukata she definitely looks the part, and with her sweet tone of voice she sounds the part. Even her method of fighting is more feminine than her brother's as she watches instead of trains. Subverted as she's actually a brutal Death Seeker that tortures without a thought.
However, she doesnít lead Emonzaemon on and clearly establishes that she wouldnít want him to sacrifice his life for her, admits that she liked Togame even when she ordered her death, and is ready to be killed by Shichika. Her actions were irreproachable, but her personality doesnít help her.
Spanner in the Works: Just like Shichika, she makes Shikizaki's plan fail because she had no interest in ruling.
A swordsman who lives in a vast desert in the country of Inaba. Second Deviant Blade user Shichika and Togame run into. The second Deviant Blade, Nakamura; is incredibly sharp and can cut through anything.
Deadly Upgrade: Covering Zantou Namakura in blood increases the speed of the Zerosen technique. After Ginkaku covered his sword with his own blood, his ultimate attack changed from 5 simultaneous slashes to ten.
The Fettered: He exaggerates this trope: The desert has invaded all his land. His castle is ruined; he is the only one left, when Shinizika ask him why he fights, he sincerely answers he doesnít know. Even so, heís willing to die defending his sword only because he must defend something.
Super Strength: Though as a child, she's still considered weak by her clan's standards.
Unskilled, but Strong: Her "amateur" skills were what allowed her to defeat Shichika, in that since she has no true skill as a warrior she's basically just flailing her weapon around and is difficult to predict.
Deviant Blade number eight. Protector of a dried lake.
Deceptively Human Robots: She seems fairly humanized at first glance, but she's never portrayed as anything but a particularly well-designed object, and is easily defeated once you figure out her limited range of programmed actions.
Justified Trope: Kiki Shikizaki was a Soothsayer who could see the future of technology, as Togame lampshades, itís the only way he could have created swords that, in that era, appear to break physic laws, but could be perfectly possible in the future.
Genre Savvy: Got rid of his deviant blade as soon as he he got it, knowing that no good can come of it.
Involuntary Shapeshifting: His appearance is a collection of his guests' regrets. For Shichika and Togame, he looks like Konayuki with Nanami's hair with the personality of Togame's dad.
The personality might be Hitei Hime's instead, as Togame might not want to openly admit and thus purposely came up with another person. At least to this troper, her father does not seem like this kind of person in the flashbacks.
The leader of the Beast Squad, he is invaluable to the Maniwa Corps as he can ascertain the locations of the Deviant Blades. He is willingly killed by Houou in order to maintain the alliance between the Maniwa Corps and Togame.