A young boy named Kotaro and his dog Tobimaru are on the run from assassins from the Ming Dynasty, who follow a prophecy that calls for the child's blood as the main ingredient to the secret to immortality. Along the way they meet a skilled, namelessronin, who keeps his blade tightly bound to its sheath and unable to be drawn. Kotaro offers to hire the nameless man for protection on the way to the nearest temple, but the Ming aren't so easily deterred.
This anime provides examples of:
Annoying Arrows: Averted most of the time, but played straight with the Chinese soldiers. Justified as they were taking drugs that caused them to Feel No Pain.
The Archer: Jyuurouta is able to out-snipe and kill one of the supernaturally strong Ming warriors and is praised by Shogen, his superior and mentor, as being skilled with a bow.
Arrow Catch: Fuugo. Not so much a catch as letting it slam into his forearm.
Art Evolution: A minor case when comparing the pilot to the finished film.
Automaton Horses: Nameless discusses the importance of proper horse care early in the movie. Later on, a messenger rides his horse full-tilt to deliver an urgent message, whereupon the poor thing collapses. And finally, horses get targeted for attacks. A lot.
Breaking the Bonds: Involving the ropes binding Nanashi's sword together
It's called a Peace Knot. The cause is to let people know you're not planning to kill anyone today, as it renders you unable to draw your sword in a hurry.
Chekhov's Gun: Luo-Lang dominates the fight, but the jade trinket saves Nanashi and allows him to fatally stab Luo-Lang. Nanashi's dye nuts also find an application in the final battle.
Chinese People: Only distinguished by red cloaks and a different language.
And funny hats. And a slightly different skin tone. And mildly stereotypical fashion sense.
Clean Cut: Luo-Lang does this to Byakuran's arm when he aims his gun at Nanashi and Kotaro.
Combat Pragmatist: The entire cast when you get down to it; but Nanashi in particular.
Arguably the one who is the least Combat Pragmatist would have to be Luo-Lang. But when you're a foot taller than everyone else, and hopping around like Yoda on crack, you don't really HAVE to fight dirty. The dirtiest he gets is using a corpse as a shield to rush a bunch of archers.
As the video linked above was taken down, I will summarize. Nanashi is sleeping in a rundown shrine, with his funny Japanese hat over his eyes. Reminiscent of a certain other shiftless ronin rogue... Seriously, ronin can apparently sleep anywhere.
Even Evil Has Loved Ones: Itadori, the backstabbing, power-hungry warlord, is shown to genuinely care for his family during their brief scenes together.
He's also the only main character from Japan that uses a sword. Most of the main characters are from China. Or monks. Luo Lang's sword is a dao, as are Fuugo's twin swords. Extra points to the Chinese man using a tri-section staff with scythe blades on it though.
Exotic Weapon Supremacy: Averted, but not inverted. Exotic weapons are shown to be just as effective as more mundane weapons, being more effective in some situations, less effective in others. The difference is the strength of the character.
Debilitating = Fatal. Example: Fuu gets up and wanders around looking for his sword with a broken arm. And said sword blade STICKING CLEAN THROUGH HIS NECK. One of the rare examples where coughing blood is actually justified. He gets about 5 steps before he collapses.
Hero of Another Story: Itadori and Jyuurouta seem to have their own plot in the background, which we only see a few scenes of.
If you watch closely, it appears that Itadori and Nanashi were a part of the plot that raised up the lord that Itadori eventually betrays with Jyuurouta's help. Itadori does say that he's only met one person who was at a level of skill on par with Luo Lang...
Homoerotic Subtext: Fuugo seems to be attracted to Luo-Lang; this is lampshaded by another character at one point while the latter is on a mission.
"You almost look like a wife who has lost their husband."
Human Shield: Luo-Lang uses an unfortunate soldier's corpse to block arrows.
Instant Death Bullet: To be fair, it left a grapefruit-sized hole in the guy's chest. That's a BIG bullet.
Not necessarily that big - note that the shooter is quite old and not exactly athletic. Lead bullets fired from smooth-bored muskets just tend to do that kind of injuries.
Invulnerable Horses: Completely averted. Plenty of fighters are willing to kill and maim horses to bring down their riders, including stabbing their throats with throwing weapons and slicing off their legs mid-run during a battle.
Katanas Are Just Better: Averted; only one main character uses an actual katana, and the weapon itself isn't that much better.
Kill 'em All: Arguably, the only survivors are Kotaru and the dog. Nanashi survives the final battle but is heavily wounded, barely conscious by the end and blood can be seen in the snow behind him as he and Kotaru ride into the sunrise
Licked by the Dog: Tobimaru is instantly fond of the shady vagrant who's shown up in his young master's shack.
Only in It for the Money: Nanashi claims that this is the reason why he becomes Kotaro's unofficial bodyguard.
Though it's apparent that Nanashi starts to develop feelings for Kotaro and a sense of responsibility.
Made of Iron: Nanashi should have died at least twice times during his fight with Luo-Lang.
Major Injury Underreaction: Standard for the Chinese due to their drugs, but the elderly, frail Lord Byakuran probably sets the record. Cutting off his arm only makes him annoyed at you.
Master Swordsman: Practically everyone, but most notably Luo-Lang and Nanashi.
Also a couple Master Archers, a Spear Master a Master of the Three Sectional Staff With Scythe Blades, A Whip Master, and a Master of Two Axes Tied Together With Rope.
Meaningful Echo: "I wasn't talking to you, I was talking to the dog."
Mighty Whitey: Luo-Lang, a blonde-haired, blue-eyed European; Bai-Luan calls him a "Western barbarian" at one point. One of the best fighters in the movie.
Possibly the other best fighter, Nanashi. He is likely mixed, given the fact he's got red hair in an anime without Anime Hair, though through the use of dye he does perfectly pass for Japanese. However, red hair is possible for a completely Japanese person, just incredibly rare. Also, Kotaro asks him if he's a "southern barbarian", which could refer to another part of Asia where red hair is more common, such as Central Asia or the Himalayas.
You could even call this "Mighty Foreigner, the movie"; in terms of fighting skill, any and all Japanese from the bandits to the soldier mooks and up to a Shogen's personal followers are all outclassed by the Chinese, requiring them to Zerg Rush for any measure of success. And in turn the Chinese People are outclassed by Luo-Lang and Nanashi, which as said above both may have non-Chinese/Japanese ancestry in their blood
Not So Different: Luo-Lang and Nanashi, both of whom have physical traits that would make them strangers to their own cultures, and are looking for a higher reason for fighting.
Until they run out of drugs and end up in withdrawal, though whether or not that was withdrawal or just him finally reacting to the massive amount of torture he's experienced but couldn't feel earlier is up debate.
The Ghost: The Chinese Emperor's desire for immortality is what sets the entire plot of the film in motion; but he never makes an on-screen appearance, he's only mentioned in passing by the Chinese warriors.
The Nameless: Nanashi, which literally means "Nameless".
He stresses that he has received a different name from each lord he served. One called him "Red Hair".
Theme Music Power-Up: Played straight, then subverted once Itadori is shot to death.
Who's still cheering for Itadori at that point? Luo Lang got the power up.
Throwing Your Sword Always Works: Used early on by Luo-Lang, and later half subverted when Nanashi does this then realizes he's weaponless afterward, and has to fight off several opponents without it.
Subverted?! The second one defies the laws of PHYSICS with its effectiveness! At least Luo-Lang put some arc on his.
Luo-Lang throws his broken sword at Nanashi, knocking him off the platform they were fighting on. It's fair to say that the the film loves this trope.
Translation Convention: There are several scenes in which the Chinese characters find themselves alone and they seem to speak Japanese instead of Chinese (or, in the case of the dub, English).