It all started as a joke.
Ladybug had been waiting at their meetup spot, eyes scanning the rooftops when it happened. As light as a feather, she felt something touch her in between her shoulder blades. At first she thought nothing of it, but when it started to slowly make its way up her back and up her neck, her body shivered involuntarily at the feeling. A breathy laugh next to her ear made her jump, and the quick flash of a dark leather tail was the only thing that stopped her from grabbing the offending hand on her neck and tossing its owner off the building.
"Ticklish?" a familiar voice teased. She could clearly tell the grin on his tone, and when she glanced back she was met with her partner's upturned lips. His one hand lazily moved, causing a claw to lightly run back and forth from her suit's spandex to her skin and back again.
"Not at all," Ladybug said dryly, arms crossing as he stepped closer. Her back hit his chest as he pulled her flush against him, and she felt the rumble of a silent purr.
"If m'lady says so," Chat said, kissing her lightly on the top of her head before resting his chin on it.
The two stood there for a few moments, basking in each other's presence, before slowly pulling away from each other and heading out on their patrol.
But this wasn't the last of Chat's claws on her.
Ever so slowly, Chat became more touchy around her. A brush of their hands when no one was looking, with his claws lingering on the back of her hand even when his fingertips were no longer touching her. The sharp tips touching her suit when he grabbed her hand or placed a comforting hand on her shoulder. All was so innocent when they were in public and watched by cameras.
But when they were alone, oh boy when they were alone, she couldn't help but tremble under his hands and claws.
With the suits on, they couldn't do as much as both of them wanted. But that didn't stop them from seeing what they could get.
On rooftops, hidden from all but each other, Chat pressed her up against brick chimneys, a possessive hand on her hip. His other covered hand grazed her face, so light that he could barely feel her through the suit's material, but also solid enough that made the hair on the back of her neck stand up in anticipation. His index finger then curled under her chin, lifting her head so she could see the heat in his eyes before he kissed her. Her arms went around his neck as she attempted to pull him closer, fingers running through the hair at the nape of his neck. He hummed through the kiss, and his hand slowly moved downwards.
She knew, instinctively, that having sharp claws close to her neck was a bad thing. One calculated swipe, and she could be bleeding out on the rooftop. But even then, she broke their kiss to expose more of her skin to him, tilting her head to the side as his claw tips lightly danced above her jugular before he bent down to kiss her there. Her heartbeat pulsed under his lips, and she whined when she felt his hand completely bypass her breasts and trail down her side, causing him to smirk against her.
Slowly, both his hands rested on her hip, and he purred appreciatively when he moved them to squeeze her butt. She could feel the slight prick of his claws as he massaged her there, and she groaned, head knocking back on the chimney. He huffed against her ear, and she grabbed onto his shoulders when he picked her up. With her legs wrapped around him, she could feel exactly how much he wanted her and she ground up against him.
Letting out a hiss, he clawed the back of her thighs. She gasped at the sensation, trembling. " Fuck . Have I told you I love when you do that?"
"Only every time I do it," she quipped, rolling her hips against his.
He groaned, hips rutting forward to press her more into the chimney. "Doesn't mean it isn't true."
The two grew silent, the only sound between them being their heavy breaths as they chased their climaxes. Ladybug was the first to come, groaning Chat's name as she clutched him closer to her and dug her fingers into his hair. He whined when her fingers scratched behind his leather ears.
His face pressed into her neck, and he let out a frustrated growl when he heard both of their weapons chirp with an akuma alert. He felt her stiffen in his grasp and, although he so badly wanted to continue grinding against her to finish, he slowed his hips to let her legs fall down. Her hands didn't leave his hair, so when she was fully standing again she dragged him down for a kiss.
"The faster we de-evilize this akuma, the sooner we can continue," she said against his lips.
Ladybug never saw Chat Noir's cat-like pupils grow so big as fast as it did then, and she could barely catch up to his determined sprint to the akuma.