Phantom Blade Zero · Character
Mu Xiaokui
Mu Xiaokui is the only daughter of Mu Tianmiao, the head of The Order whom Soul is accused of killing, and Soul’s childhood friend. She is a sword prodigy trained by her two guards, and in Chapter 3 she stops Soul in the Village of Lu to fight him for an answer.
- FactionThe Order
- Where you meetVillage of Lu, Mount Soulrend
- Quests2 in the quest log
- Boss fightFight page
Who is Mu Xiaokui?
Xiaokui grew up inside The Order as Mu Tianmiao’s only child, alongside his two adopted sons, Soul and Zuo Shang. The game sketches her as lively, blunt and sure of herself, a girl who loved swordplay and kept dragging Soul off to practise while Zuo Shang stayed with her father. She fights with the slender Wild Oriole sword, fast and light, and later with what her two guards, Jade Dancer and Iron Fiend, taught her.
When the game opens her father is dead and Soul is the one blamed. Zuo Shang takes charge of The Order and promises her revenge. She does not take it at face value: what she wants is to find Soul, cross blades with him as they promised each other as children, and get the truth out of him herself.
You meet her in Chapter 3, the Village of Lu. She is the boss at the Lakeside bell, and on the road to Pangzhen she is the one who hands Soul the eyeball that opens Puppet No. 44 and the smugglers’ tunnel.
How Mu Xiaokui looks in the game
© PARAWULIN PRODUCTION LIMITED / S-GAME
Who Mu Xiaokui is to the others
Father
Head of The Order and Soul’s adoptive father. Xiaokui is his only child; his death sets the whole story moving.
“Mu Tianmiao has only one beloved daughter, Mu Xiaokui.”
In-game loading screenChildhood friend
They grew up together. As children they promised that if they ever fought, neither would hold back, and in Chapter 3 she keeps that promise.
Guard and teacher
One of her two guards. As a girl Xiaokui asked Jade Dancer to be her big sister, and she fights with what Jade Dancer taught her.
“Will you be my big sister? Then you'll have family!”
In-game dialogueGuard and teacher
Her other guard. She begged Iron Fiend to teach her his fist techniques, and they show in her second form.
“Iron Fiend, Father says your fist techniques are unmatched. Will you teach me too?”
In-game dialogue
1 more ties the story reveals later
Adoptive brother
Her father’s other adopted son, who now leads The Order. Xiaokui works out that he set Soul up to kill her father.
“Zuo Shang... He manipulated you into killing my father.”
In-game dialogue
Every quest with Mu Xiaokui in it
Story
Heartless Remnants
The story quest of Chapter 3. Soul crosses the empty Village of Lu looking for a way into Pangzhen; Xiaokui fights him at the Lakeside bell and gives him the eyeball that unlocks Puppet No. 44, the last lock before the smugglers’ tunnel.
Collectibles
Young Mistress
Five red ribbons Xiaokui left around the Village of Lu. Pick up all five before you fight her and the fight gains a third phase with Jade Dancer and Iron Fiend at her side, and she also drops the Fiend Saws. Where each ribbon hangs: all five Red Ribbons.
In the game’s own words
The game’s bestiary note on each form you fight. They are folded shut because some of them give away what happens later.
Mu Xiaokui, Young Mistress of the Order
Mu Tianmiao’s only daughter and Soul’s childhood friend. Lively, straightforward, and self assured, Xiaokui has loved swordplay since childhood and shows remarkable talent for martial arts. With the slender sword Wild Oriole in hand, she fights with graceful speed, striking ten times in an instant as sword shadows scatter around her. Light as a swallow, she excels at aerial slashes and thrusts, her attacks carrying a sharpness and vitality all her own.
Then everything changed. The father she had always believed unshakable was murdered, and the killer was Soul.
Zuo Shang seemed to accept it almost immediately. He comforted her, promising to avenge their Shifu and give both her and the Order an answer. But Xiaokui wished he would tell her there had been some misunderstanding. Their happy days together still felt so close. Her father was always going on about his ideals, yet he would still indulge her excuses to drag Soul away for sword practice, while Zuo Shang stayed behind to keep him company.
They were all precious family to her. So what happened? Why did the person she had trusted without question, the one she had dreamed of roaming the Wulin with and righting wrongs beside, leave without a single explanation and head alone to Pangzhen with the Order in pursuit?
Mu Xiaokui, Queen of Iron and Jade
Years ago, she and Soul made a promise: if they ever crossed blades, neither would hold back. In this fight, she moves like lightning, advancing and retreating without leaving an opening. Power gathers in both arms, every strike solid and controlled. The techniques taught by Jade Dancer and Iron Fiend come together in her, making her nearly unstoppable.
She carefully sorts through her grief over her father's death, the mystery of Soul's sudden departure, the changes brewing within the Order, and the concern of those around her. She forces herself to stay calm and make the right judgment.
Once the Order's affairs are settled, she resolves to meet Soul face to face and demand an answer. She will fight him with everything she has, so he understands just how angry and unsettled she is by his secrecy, his leaving without a word, and his self righteous insistence on carrying everything alone.
When blades clash and sparks fly, everything seems to freeze for an instant. In that moment, she finds her answer. The person before her is still the Soul she once knew. Like her, he has not changed.
Even if he refuses to explain, she will find the truth and the answers herself.
What happens to Mu Xiaokui
The end of the story for this character
Xiaokui finds the truth herself, as she said she would: Zuo Shang manipulated Soul into killing her father. In her last scene with Soul she says she is going down the mountain to a place beyond Zuo Shang’s reach, and that a new Order will rise there.
“There, a new Order will rise again.”
In-game dialogue
Keep reading
How to beat Mu XiaokuiThe boss fight page- QuestHeartless RemnantsStory
- QuestYoung MistressCollectibles
- MapVillage of LuWalkthrough for this region
- FactionThe OrderWho they are and who leads them
- GuideMu Xiaokui’s 5 Red RibbonsWhere each ribbon is and how to trigger her third phase
- WeaponWild Oriole SwordThe sword she drops
- AllEvery character in Phantom Blade ZeroEveryone who appears in the story or a quest
Frequently asked questions
Is Mu Xiaokui related to Soul?
Soul is one of Mu Tianmiao’s adopted sons and Xiaokui is his only daughter, so the two grew up together as family. The game calls her Soul’s childhood friend.
Where do you fight Mu Xiaokui?
In Chapter 3, Village of Lu, at the Lakeside bell. The fight has two forms, and a third phase if you carry all five of her Red Ribbons.
What weapon does Mu Xiaokui drop?
The Wild Oriole Sword, and the Fiend Saws as well if you trigger her third phase with all five Red Ribbons.
Who are Jade Dancer and Iron Fiend?
Her two guards and her teachers. You fight both of them in the Village of Lu, and both join her in the secret third phase.
Sources for this page 1
- Phantom Blade Zero Official Phantom Blade Zero launch build: the game’s own dialogue, documents, bestiary, quest log and loading screens, read 3 November 2026. Quotes are the game’s English text, unchanged.