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The Soundless Shadow

Summary:

His secret was exposed.
His trust—shattered.
And the only place left to “keep him safe”… is the home of the brother who despises him the most.

Chained, accused, and drowning in silence, Kaeya is ready to give up—
until everyone begins to realize:
The traitor they saw... was just a boy who never knew what it meant to be loved.

But wounds don’t heal that easily.
And when the past claws its way back into the light,
will they survive it together… or break all over again?

Notes:

This is a Genshin Impact fanfiction focusing on Kaeya and Diluc's complicated relationship. Expect angst, emotional wounds, and painful interactions — but yes, there will be light at the end.
English isn't my first language, so thank you for your patience. I poured my heart into this. Hope it resonates with someone out there.

Chapter 1: The Spy and the Melting Snow

Notes:

(See the end of the chapter for notes.)

Chapter Text

The winter wind cut through the silence of Mondstadt, sharp and bitter.
But it wasn’t the weather that made the air feel cold.
Nor the thin snow beginning to fall from the overcast sky.
That day, one name filled the entire meeting hall of the Knights of Favonius:

Kaeya Alberich.

A witness from Liyue.
A confidential message from Fontaine.
And an in-depth investigation led by Lisa.
Together, they revealed one bitter truth:
Kaeya was not only of Khaenri’ahn blood—
He was still actively receiving transmissions from the remnants of its underground network.
A spy.

“The evidence is clear,” Lisa said, calm but firm, tossing a stack of documents onto the table.
“External codes from beyond Teyvat. Coded messages. And the name ‘Alberich’... appears more than once.”

Jean closed her eyes, her breath unsteady.
She had always known there was something... not quite honest about Kaeya.
But she never imagined it would be this heavy.

“Bring him back alive,” Jean said, her voice trembling but resolute. She turned toward the window.
“Don’t treat him as an enemy. Let me speak to him first.”

Amber lowered her head in disbelief.
Lisa said nothing, her hand tightening around her spellbook.

The meeting ended with a single, silent mission:
Capture Kaeya Alberich.

Notes:

This fanfiction exists because I desperately wanted a nonstop suffering fest for Kaeya and Diluc, but couldn’t find the perfect one—so I made it myself and unleashed my inner drama-loving masochist.
🔪🔪🔪