The change didn't announce itself.
It revealed itself.
Cassi noticed it in the smallest way possible.
She forgot a word.
Not an important one.
Not something complex or critical.
Just—
A word.
She stood in her room, staring at the artifact, trying to describe the faint shift in its surface.
"It's… it's…" she frowned.
Nothing came.
The concept was there.
The understanding was intact.
But the word—
Wasn't.
Cassi stilled.
"…Okay," she murmured.
"That's not good."
It didn't stop there.
Later, during training—
She misjudged distance.
Not by much.
Just enough to step slightly off rhythm.
Riven noticed immediately.
"That was off," he said.
Cassi nodded.
"Yeah."
She didn't explain.
Because she didn't have an explanation yet.
But she was starting to understand.
The cost wasn't dramatic.
It wasn't obvious.
It was subtractive.
"You're losing definition," Lira said later that day.
Not in a chamber.
Not in a formal setting.
Just walking beside her.
Cassi didn't look at her.
"I figured."
A pause.
"Describe it," Lira said.
Cassi hesitated.
Then—
"It's like…" she started.
Stopped.
Adjusted.
"…Like parts of me are being simplified."
Lira didn't interrupt.
"Not gone," Cassi continued.
"Just… reduced."
A pause.
"Less precise."
Lira nodded slowly.
"That aligns with what we observed in the fault."
Cassi exhaled.
"Yeah," she said.
"I noticed the connection."
Silence stretched between them.
"…Is it reversible?" Cassi asked.
Lira didn't answer immediately.
Then—
"We don't know."
Of course.
That night, Cassi tested it.
Carefully.
Deliberately.
She sat at her desk.
Placed the artifact in front of her.
And began to reconstruct it.
Not because it was broken.
Because she wanted to see—
If she could still do it.
Her threads moved.
Steady.
Controlled.
They formed around the object.
Aligned.
Defined.
And for a moment—
Everything felt normal.
Then—
Something slipped.
A layer she intended to add—
Didn't form.
Not because she couldn't.
Because she couldn't fully define it.
Cassi's breath tightened.
"…No."
She tried again.
Slower.
More focused.
The structure formed—
But simpler than intended.
Less detailed.
Less refined.
It held.
But it wasn't the same.
"…Okay," she whispered.
That confirmed it.
The next morning, she didn't wait to be summoned.
She went to them.
Vael.
Lira.
Kael.
All in the same room.
"You already know," Cassi said as she entered.
They didn't deny it.
"You're degrading," Kael said.
Cassi winced slightly.
"That's a harsh way to put it."
"It is an accurate one," he replied.
Of course it was.
Lira stepped forward.
"It's not random," she said.
Cassi nodded.
"I know."
A pause.
"It's proportional."
Silence.
That mattered.
"Explain," Vael said.
Cassi took a breath.
"The more I stabilize the fault," she said,
"The more I lose."
The room stilled.
Because that wasn't a guess.
That was a pattern.
Kael's voice sharpened.
"That is not sustainable."
"No," Cassi said.
"It's not."
Silence stretched.
Then—
Vael spoke.
"Then you stop."
Cassi looked at her.
"…No."
Immediate.
Certain.
Lira's gaze sharpened.
"Cassi—"
"If I stop," Cassi said,
"It destabilizes."
Kael stepped forward.
"Then we find another solution."
Cassi shook her head.
"There isn't one yet."
Silence again.
Because that—
Was the problem.
"You are not expendable," Lira said.
Cassi met her gaze.
"I'm not trying to be."
A pause.
"I'm trying to fix something I broke."
Lira's voice softened slightly.
"You didn't know what would happen."
"That doesn't change the result."
The weight of that settled.
Because intent didn't undo consequence.
Vael crossed her arms.
"Then we limit your exposure."
Cassi frowned.
"…Meaning?"
"You don't go near the fault alone," Vael said.
"You don't stabilize it without supervision."
Cassi hesitated.
That wasn't a bad idea.
But—
"…That won't stop the cost," she said.
"No," Vael agreed.
A pause.
"But it will ensure we understand it."
Cassi exhaled slowly.
"…Fine."
Not agreement.
Not acceptance.
But—
Acknowledgment.
Later, back in her room—
Cassi sat in silence.
Her hands resting on the desk.
Still.
She tried to recall something.
A memory.
Small.
Unimportant.
And found it—
Blurred.
Not gone.
Just…
Less.
Cassi closed her eyes briefly.
"…This is the cost," she whispered.
Not power.
Not control.
Definition.
She was giving parts of herself—
To define something else.
And the more she gave—
The less precise she became.
Her threads flickered faintly.
Still there.
Still hers.
But quieter.
Simpler.
Cassi exhaled slowly.
"…Okay," she said.
Not to anyone.
To herself.
"If that's the trade—"
A pause.
"Then I need to decide how much I'm willing to lose."
Because now—
For the first time—
The question wasn't what she could do.
It was—
What she was willing to become—
To do it.