Ladybug's heart doesn't beat like it used to.
She doesn't dream like she used to, either. Every night: a world bathed in violet, the flap of butterfly wings. Her partner, face up in a pool of his own blood. When she wakes, it's with her lungs fighting for air. Her heart skips, pounds, jolts in her chest. Threatening to stop at any moment. She inhales, exhales, but to no avail.
It didn't used to be like this. She and Chat Noir used to be on the same page, always fighting side by side. She was always the sword, him the shield. But somewhere along the line, things changed. The sword grew dull, the shield sharpened. Began to launch itself forward, always in sight of the enemy.
Each hit the shield takes, it grows dented. She can fix it, of course — fix him. Like she always does. Like she always will.
What happens, though, if she cannot? If there is a dent too strong, she too weak? If the shield is not a shield, but just a boy: broken, laying in her arms, taking his last breath despite the way she begs and pleads and—
Her eyes snap open. Dreaming again.
Marinette pulls herself out of bed, ignoring her racing heart. It's getting easier to ignore these days. Whispering her transformation words, she leaves a message for him to find on her yoyo and takes to the skies.
Chat Noir is already there waiting for her when she arrives. Maybe he couldn't sleep either. Maybe he wonders what would happen if the shield is not strong enough, if it cannot keep the sword safe like it so desperately wants to.
Maybe his heart doesn't beat like it used to, either.
"Couldn't sleep?" he asks, like he already knows the answer. His arms open for her, and she falls into them gratefully.
"I dreamed of you," she whispers into his chest.
"Oh?" Chat Noir's voice is warm, chasing away the chill of the night. "Was I handsome? Good looking? Utterly irresistible?'
"Of course. You always are."
He falls silent, then, and she knows he didn't expect it: the easy affection he asks for but isn't used to receiving. His face must be red. Red, like the blood that flows through his veins—
"I dreamed of you, too," he whispers into her hair.
She doesn't ask what color he dreams in; she has a feeling that's just one more thing they have in common.
Her head turns until her ear is pressed to his chest. His heart skips, pounds, jolts in his chest.
"Breathe," she says — to him, to herself, to them both. "Breathe. It's okay. We're okay."
"We're okay," he echoes. "We're alive."
The beating slows down, grows steadier. They breathe together; inhale, exhale. Black and red and green and blue. No violet to be seen. No butterfly wings to be heard.
No sword and shield to be found. Just a boy and a girl, hearts in sync as they should be.