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The first time Wei Wuxian says it out loud, it's not to Jiang Cheng or Shijie. It's to a stray cat he finds behind the kitchens at Lotus Pier, a skinny, trembling thing with a healing gash on its flank, cowering under a broken crate.
He's fifteen. He hasn't been afraid of cats ever, only dogs, but his heart still kicks against his ribs when he approaches. The cat meows, flattens its ears, and Wei Wuxian sits down cross-legged in the mud, keeping his distance.
"It's okay," he whispers. "I won't hurt you."
The cat blinks at him. Wei Wuxian thinks: I know what you're thinking. You're thinking: any moment now, something's going to hit me. You're waiting for it.
He says, softer: "I know."
The cat doesn't run. Wei Wuxian stays until the kitchen boy comes out and shrieks, and then he helps the boy patch the cat up and release it outside the pier walls, where no one will kick it again.
He doesn't think about why he knows. Not yet.
It starts with small things.
Jiang Cheng hits him on the arm during training, hard, the way he always does, and Wei Wuxian laughs it off, rubbing the sore spot. But later that night, lying awake in his room, he notices: he didn't flinch. Not because he's brave. Because he's used to it.
He thinks of Madam Yu's Zidian, purple and crackling. Of her cold voice in the ancestral hall: "You insolent, ungrateful child." Of the way Jiang-shushu would sometimes look at him afterward, helpless, apologetic, but never stopping her.
He thinks: She never hit Jiang Cheng like that.
He thinks: Why not?
And then he stops thinking, because thinking too much is dangerous. He rolls over and sleeps.
The second time is with Jiang Yanli.
She's braiding his hair. He'd shown up at her door with it tangled full of pondweed after a prank gone wrong, grinning, and she'd sighed and sat him down. Her fingers are gentle. They always are.
"A-Xian," she says quietly. "You have scars on your back."
He freezes.
"I know," he says. "From night hunts."
She doesn't answer. Her hands keep moving, slow and careful. After a long moment, she says: "Not all of them."
Something in his chest cracks, just a little. He thinks of Madam Yu's whip. Of kneeling on the cold stone floor, biting his lip so hard he tasted blood, because if he cried out, she'd only get angrier. He thinks of the way Jiang-shushu found him afterward, once, just once, and didn't say a word. Just handed him a salve and walked away.
"Shijie," he says, and his voice comes out strange. "It wasn't my fault, right?"
Jiang Yanli's hands stop. Then she hugs him from behind, tight, and he feels something wet on his shoulder.
"No," she says. "It was never your fault."
He doesn't tell Jiang Cheng.
Not because he's afraid, okay, maybe a little because he's afraid. But mostly because Jiang Cheng wouldn't understand. Jiang Cheng, who grew up watching his mother scream at this stray boy his father brought home. Jiang Cheng, who learned to push and shove and sneer because that was safer than love. Jiang Cheng, who would look at Wei Wuxian with that twisted-up face and say: "Then why did you stay?"
Wei Wuxian doesn't have an answer for that yet.
But he's starting to.
The breaking point comes on an ordinary day.
Madam Yu has been in a foul mood all week, something about a visiting noble's slight, something about Jiang Fengmian smiling too much at a banquet. Wei Wuxian knows the signs. He's been keeping his head down, staying out of sight, making himself small.
It doesn't work.
She finds him in the training yard at dusk, alone, practicing his archery. Her hand closes around his wrist, hard, bruising, and she says, low and venomous: "You think you deserve to stand here? To wear our colors? To call my son your brother?"
He doesn't answer. He knows better.
She shakes him. "Answer me, you mongrel."
And something in Wei Wuxian, some small, stubborn thing that has been growing without his permission, whispers: You don't have to take this.
He pulls his hand back.
Not hard. Just enough to break her grip. He meets her eyes, a thing he has never done before, not like this, not standing straight, and says, quietly: "Madam Yu. I am going to my room now."
Her face goes white with rage. Zidian crackles. But Wei Wuxian is already walking away, and he doesn't run, and he doesn't look back.
His heart is pounding so hard he thinks he might be sick. His wrist throbs. His hands are shaking.
But he doesn't stop.
That night, he writes a letter.
Not to Jiang-shushu. Not to the Jiangs at all. To himself, which is stupid, because he's never written a letter to himself before. But he needs to see the words on paper.
I was a child. I didn't ask to be taken in. I didn't ask for her hatred. I didn't do anything wrong by existing.
He stares at the page.
Then, beneath it, he writes: I am allowed to leave.
He folds the paper carefully and tucks it into his sleeve. He doesn't know what he's going to do with it yet. But it's there.
Three days later, Jiang Fengmian leaves for a night hunt. He'll be gone two weeks.
Madam Yu's mood darkens further. She finds excuses to call Wei Wuxian to the main hall, once for "disrespect," once for "laziness," once for no reason at all. The last time, she raises her hand, and Wei Wuxian steps back, just one step, and says, "No."
The whole room goes silent.
Jiang Cheng is there. So is Jiang Yanli. So are half a dozen disciples. Everyone stares.
Madam Yu's hand is still raised. Her eyes are wild. "What did you say to me?"
Wei Wuxian's voice is steady. He doesn't know where it comes from. "I said no. You will not hit me again."
He turns and walks out.
Behind him, he hears Madam Yu scream. He hears Jiang Cheng shout his name, angry, confused, scared. He hears Jiang Yanli's soft intake of breath.
He doesn't stop.
He packs that night.
Not much, a few changes of clothes, his sword, the letter in his sleeve, a handful of silver he's saved over the years. He leaves his flute on the bed. He can't take everything. He can't take her things.
Jiang Yanli finds him at the pier, just before dawn.
She doesn't try to stop him. She just stands there, tears streaming down her face, and holds out a small pouch.
"Money," she says. "And dried lotus seeds. For the road."
He takes it. His hands are trembling again.
"Shijie..."
"Go," she whispers. "A-Cheng will understand. In time. Go."
He hugs her. Hard. And then he lets go.
He doesn't look back at Lotus Pier.
Not once.
The road is cold and quiet, and he doesn't know where he's going. Somewhere north, maybe. Somewhere with mountains. Somewhere he can breathe.
He walks until his legs ache, until the sun is high and hot, until he can't see the lake anymore. Then he sits under a tree, takes out the letter, and reads it.
I was a child.
He thinks: I am still a child.
And for the first time in fifteen years, Wei Wuxian lets himself cry.
Not quietly. Not hiding. Just there, in the dirt and the sunlight, sobbing like the kid he never got to be.
When he's done, he wipes his face, folds the letter again, and keeps walking.
He doesn't know what comes next. He doesn't know if he'll ever see the Jiang siblings again. He doesn't know if he'll be okay.
But he knows one thing now, solid and real and his:
He didn't ask for it.
And he never has to stay.
Years later, on a hillside in Yiling, Jiang Yanli will find him again. She will be older, tired, maybe married to that peacock, if he treated her right. She will look at him, really look, and see the quiet in his shoulders, the way he doesn't flinch anymore.
"A-Xian," she'll say.
And he'll smile, not his old smile, not the loud one, but something softer, something real, and say: "Shijie. I'm okay."
For the first time, he'll mean it.