Chapter Text
Leo heard the soft shuffle of feet before he heard the hesitance in Donnie’s breath. It was subtle and barely there, but Leo had learned to read Donnie like a heartbeat. Especially lately. Every quiet inhale from his twin sounded like another weight Donnie was too afraid to carry.
When Leo looked up, Donnie was standing by the doorway, fingers twitching with restless energy, his mask tails drooping in a way Leo didn’t like.
“Dee?” Leo asked gently. “You okay?”
Donnie didn’t answer at first. He walked in slow, deliberate steps—like he was approaching something fragile. Or like he thought he was fragile.
Leo already hated where this was going.
“I’ve been thinking about something,” Donnie finally said, voice wobbling as he rubbed his arm. “And—I just—thought… maybe it’s time I said it out loud.”
Leo straightened, alert.
Donnie looked up at him with those wide, nervous eyes—the ones that once matched Leo’s perfectly but now sat lower, smaller in a way Leo could never forgive the world for.
“I remember,” Donnie said softly, “I think we were always twins. And—” He swallowed hard. “It doesn’t make sense anymore.”
Leo’s breath caught.
No. No, no, no—not this again—
Donnie pushed on, words spilling out faster as if he could outrun the ache in him.
“Considering the progress of my growth—my height—it doesn’t make sense that I’m this small now. It should’ve been—based on everything—based on our DNA, our patterns—my feet are the right size for a much taller height and I’m not.”
He squeezed his hands into fists.
“And I’ve been wondering, if when—everything happened with the Technodrome—if that malnourishment affected my growth. If missing that spurt means I’m—stuck like this. And if—”
Leo could feel his own heart breaking open, piece by piece as Donnie finished with: “—if that means maybe we’re not really twins anymore.”
Leo stood so fast his chair scraped the floor. “Donnie.”
“I’m not upset!” Donnie said quickly, holding his hands up like he always did when he was trying not to sound needy. “I’m just—I was worried that you—”
“Hey.” Leo was already there, touching Donnie’s forehead with his own in a soft bonk. “It’s okay, baby. Don’t beat yourself up about it.”
Donnie’s cheeks flushed. Embarrassment, fear, shame—all swirling in a way Leo wanted to cut the world open for daring to put there.
“I’m not beating myself up,” Donnie whispered. “I just… don’t want you to think I’m not really your—your twin. I don’t want you to think I’m less.”
Leo’s throat tightened painfully.
He thought about the weeks Donnie barely ate. The nights Leo carried him to bed because Donnie couldn’t stand without shaking. The mornings Donnie stared blankly at food, confused, his memories flickering like glitching screens.
He remembered holding Donnie’s hand the day he forgot they shared a birthday.
Leo had never been so scared in his life.
He didn’t let any of that show now.
Instead, he gently pulled Donnie into his arms.
“It’s not all bad,” Leo murmured softly, brushing his cheek against Donnie’s head. “Like—just—look.”
And with a small, forced brightness, Leo lifted Donnie fully off the floor. Donnie let out a startled sound, automatically curling into Leo’s hold.
Leo hugged him closer, burying a trembling exhale into Donnie’s shoulder.
“We fit together perfectly now, right?” he said lightly. “Like puzzle pieces.”
Donnie paused, blinking up at him. Something eased in his face—something that had been wound too tight for too long.
“Puzzle pieces,” Donnie repeated, nuzzling against Leo’s chest like it was the most natural place on earth. “Yeah. I… I like that.”
Leo swallowed hard as warmth bloomed in his ribs. Donnie believed it. Of course he did. He trusted Leo more than anyone alive.
“Sounds pretty twin-like to me,” Donnie added.
Leo let out a shaky laugh.
“Yeah, Dee. It does.”
He pressed his cheek to the top of Donnie’s head, arms tightening protectively around him. Donnie sighed, content, and melted into the hug.
He didn’t notice the tears slipping silently from Leo’s eyes.
Leo held him closer—close enough that Donnie’s small frame was pressed entirely against Leo’s plastron. A place he used to meet shoulder-to-shoulder, eye-to-eye.
Leo hated it.
Hated that Donnie’s body had paid a price for something he never chose.
Hated that Donnie doubted the one thing that had always been theirs.
Hated that he hadn’t been able to protect him.
But he didn’t let Donnie see any of that.
He only whispered, voice thick but soft:
“You’re my twin, Donnie. Always.”
Donnie made a small, relieved sound, hugging Leo tighter.
Leo closed his eyes, letting the weight of his baby twin in his arms guide him back to steady.
He’d carry Donnie’s hurt, his fears, his memories—every missing piece.
He’d hold them all.
Because twins didn’t have to match perfectly to fit.
Some puzzle pieces were meant to look different.
But they still belonged together.
Always.