In HawkMoth's Lair...

Ladybug stood up to face the cord that had drained Midoriya's quirk out of him. The cord glowed and shimmered like a rainbow, just like when she held his Miraculous. She could feel the energy coming off of it as she walked closer to it.

Her bell blue eyes stared at it with determination, but before she could do anything about it, Cat Noir jumped in to say something.

"Wait!"

Ladybug rolled her eyes and placed her hands on her hips.

"What now, kitty?" Ladybug asked him.

"Maybe you should try placing your Miraculous onto the cord," Cat Noir said to her, "You know, just to be sure it's okay."

Ladybug perked her lips at the thought, and then reached out to her earrings. She caressed them, hoping Tikki would okay with this. Taking them off, she detransformed into Ladybug, and Tikki floated right by her side.

"Ma-Marinette, what're you think you're doing?" Tikki asked her, knowing full well what was going on.

"I need to do this, Tikki," Marinette said to her, "Izuku and the others have done so much for us. I can't just leave this..."

Marinette pointed to the cord, expecting Tikki to just go with this.

"Especially with Lila, Chrysalis, whoever has that Butterfly Miraculous at this point. We need to take it with us somehow, and this is the only way."

Tikki looked at the energy dancing around the cord and could feel how different and unique Midoriya's quirk was. Something about it made her feel really worried for Marinette, and what it might do to her.

"Let me just see if I can absorb it into the Miraculous," Marinette said, pleading for her friend to let her do this, "This might help them finally get back home."

Tikki took a deep breath in and out and let Marinette do it.

Marinette turned back to the cord and very carefully placed her earrings onto it. As she got closer to it, she could feel a magnetic pull and the earrings latched itself to the cord. The glowing brightened up, and even static started to wrap around them.

Cat Noir stared at Midoriya's quirk in awe at how stunning it was. Even Marinette couldn't look away from it.

The power of One for All seemed to activate the Ladybug Miraculous as it turned out and tried to suck in Tikki.

Before Marinette thought she'd done it, his quirk made her Miraculous bounce off of the cord. Marinette watched her Miraculous skip across the floor like skipping stones across a pond. Tikki and Marinette shared a sad look as Cat Noir picked up her Miraculous for her.

He held them out for her, giving a look that said they should head back to the school. Marinette put her earrings back on and looked back at her partner with such determination.

"Sorry Cat Noir, but I'm not done yet," Marinette said to him.

Cat Noir's green eyes widened she transformed in front of him and ran back over to the cord. He felt something come over him when he watched his partner grab onto the cord.

"Marinette, No!"

Ladybug felt an overwhelming feeling come over as held onto the cord. Her eyes widened from how weird Midoriya's quirk felt. It didn't feel anything like putting on a Miraculous. It felt like the quirk was absorbing into the Miraculous, but also into her. Her transformation started to flicker between Ladybug and Marinette, but she was able to hold the transformation.

Ladybug felt like she couldn't let go. The same magnetic pull came over the cord, but it was stronger now that she was Ladybug. The shimmering rainbow glowing intensified as it started to spread to her into her Miraculous.

"Marinette, you have to let go!" Cat Noir yelled at her as ran up to her.

Ladybug tried to let go, but her arms couldn't move.

"I-I ca-can't...!" Ladybug yelled back with concern in her eyes.

Cat Noir didn't know what to do, but he had to do something to help her. It looked like the glowing was starting to dim, so he thought he could pull her away from it now. He grabbed her arms, pulling as hard as he could.

The glowing was starting to spread to Cat Noir, but he didn't let go of his partner. He could feel the quirk a little bit, but nothing he couldn't handle. Cat Noir pulled again, and the glowing slowly fading away into her earrings.

They both launched across the room similar to the way the Ladybug Miraculous did. Cat Noir held her close to protect her, but he noticed how weird she felt. When he held her, she had a similar feeling to One for All. As they separated from each other, Ladybug's Miraculous couldn't hold its transformation much longer, and she detransformed.

"Marinette, are you okay?" Cat Noir asked with so much concern.

Marinette stood up, but felt herself collapse from how weird she felt. She looked pale, and her blue eyes were wide with shock.

"I-I'm... not sure..." Marinette said to him as Tikki floated over to her friend.

Cat Noir sat down on the floor, making sure she really was okay. He gripped on her shoulder to look into her eyes. She looked the same as she always did. Nothing about her appearance changed. They didn't know what these quirks did to them, and they knew not much about how they work. They have seen someone like Ashido and Jirou however and realized quirks can change someone's appearance. It was like it was some sort of mutation.

"You look like you at least," Cat Noir said to her with a slight chuckle, "That's a plus."

Marinette gasped as she placed her hands on her face. She never even thought about that, thinking about Ashido and Jirou.

"We-Well, I feel something... different..." Marinette explained, and noticed Cat Noir's ring.

It looked like his Miraculous was glowing. A pit in her stomach formed when she saw it.

"Cat Noir, your ring," Marinette said as she pointed to it.

Cat Noir looked down at his ring, and it the shimmering glow absorbed into it. Soon enough, the glow just disappeared from both of their Miraculous and the cord.

Cat Noir and Marinette both sat there, speechless at what just happened.

"D-Do you feeling any different...?" Marinette asked him.

"Um..." Cat Noir trailed off as he shook his arm to see if felt any different. His transformation didn't even flicker like hers did. "Not really... Maybe I didn't absorb it enough like you did."

"Yeah... Maybe..."

She reached for her earrings and felt a weird static bounce off of it. Looking back at Tikki, she looked a little worried for her holder.

"Tikki, do you anything different?" Marinette asked her, "The transformation kind of there for a moment."

Tikki looked at her little arms and moved them around like Cat Noir did. She didn't seem to feel much the power now, but she definitely felt something when Marinette went to grab the cord.

"No, I don't feel anything," Tikki said to her.

Marinette slouched as she realized how odd this was. She looked around the lair wondering what to do next.

"Maybe we should head back to the school. I could test it out as we're heading back," Marinette said to Cat Noir.

Cat Noir nodded and helped her up, but then she started to feel a bit lightheaded.

"Are you sure, Marinette? Maybe I should carry you."

"No, it's okay. The dizziness went away," Marinette told him, "Tikki, spots on."

Marinette transformed into Ladybug, and the transformation looked more like a shimmering rainbow than pink this time around. She instantly felt that power of One for All start to come back. Only it wasn't overwhelming this time around. It felt more relaxed and like it was a part of her now.

"Are you ready, Cat Noir--"

Cat Noir was staring at her rather shocked. She wasn't expecting that and gave him a confused look.

"La-Ladybug... yo-you have... antennas," Cat Noir said as he pointed to her head.

Ladybug's eyes widened at what he just said and slowly reached up to touch the top of her head. Her fingers finally felt antennas sticking out of her head and went down to her hair. It was coming out of her head.

"Wha-What?!"

"Don't worry. Maybe it's just temporary!" Cat Noir cried out.

"Bu-But Cat Noir, this isn't like your ears. They are actually stuck to my head!"

Then something suddenly popped up from behind Ladybug's costume. It looked translucent and sparkly from the sunlight coming in through the butterfly window. Ladybug felt it too as she slowly looked behind her but didn't see anything.

Cat Noir was in awe when he realized her costume had changed.

"Ladybug, you have wings!"

Her costume now had a ladybug like cape draping down her back with wings even longer than that. The wings went down to her knees and looked very elegant.

"WHAT?!" Ladybug cried out even louder as she spun around frantically trying to get a good look at them.

She got a little dizzy from it and stopped for a moment to calm down. Finally she saw her wings once they relaxed a little. They were much sparklier than she expected. It somehow made her feel more like an adult.

"Wow..." Ladybug mumbled to herself and then turned to Cat Noir, "You don't think it looks weird?"

Cat Noir circled around her, trying to get a better look at her costume. He poked at her wings, which Ladybug could weirdly feel that.

"Does it hurt when I touch them?" Cat Noir asked teasingly.

"No, actually. It doesn't, but I could feel that," Ladybug said to him, "You don't look any different though."

"Hey, you must've absorbed it more than me."

Ladybug grabbed for her yo-yo and noticed that her yo-yo even had a slightly different design on it. More elegant, just like her wings.

"Yeah... Maybe... Come on, we should head back to the school now."

Ladybug and Cat Noir launched out of the lair through the window that was left open. Cat Noir made sure to take Uraraka's gauntlet with him as they traversed through the streets of Paris. Cat Noir used his baton to jump from building to building while Ladybug used yo-yo to launch herself.

The wind flowing through her hair felt so good this time around. Even the wings felt so light and weightless that she could sense her wings starting to open up. Something about launching through the air made her wings open up and take off.

Cat Noir noticed this and felt something inside of him feel so awestruck. Just by the way her wings opened up and glided through the air made her look more strong and elegant at the same time. And then, she took off towards the school at full speed.

Cat Noir felt a sudden breeze blow him away. He stopped for a moment, thinking she might've accidentally left him behind, but then she came zooming this way and stopped right in front of him. Her smile was so wide and bright that Cat Noir felt it too.

"Come on, kitty. We don't want to keep everyone waiting!"

Cat Noir smiled back at her, and he followed her to show everyone what they had found.

"I hope everyone wasn't too busy while we were gone..."

Another amazing chapter!

This was really fun to write. I really liked writing something between Marinette and Cat Noir. I love MariChat so much!

Ladybug has a quirk?! WHAT?! She tried to absorb One for All's leftover quirk with the earrings but it didn't work. I wanted it to be that someone had to be wearing the Miraculous since it already had a Kwami and power connected to it. It seemed to mess with her Miraculous, but only when she transformed back into Ladybug after the initial absorbing of the leftover quirk.

We'll see later if it did anything to Cat Noir's quirk. He only held onto Ladybug for a moment, so who knows??

I will say though, One for All's leftover quirk just kind of enhanced Ladybug's Miraculous powers if that makes any sense.

More to come soon!