(A/N): This might be quite long as I had a lot of ideas for this. I had a laugh just planning it out lol

(Y/N)'s Pov

"God, my arm's are so heavy..." I groaned to myself, as I slowly woke up.

I looked around to find out I was in the main part of the taskforce headquarters.

"How did I end up here? I must've been sleep walking", I said to myself.

My head really hurt. I ran my fingers through my hair.

"And what's up with my hair?! It's so greasy! It feels like I haven't washed it in months! It feels as greasy as a pepperoni pizza!" I say. "I better go take a bath!"

I get up to find myself dressed in...L's clothes?

"What the hell? Why am I in L's clothes? I don't remember going to bed like this!" I say to myself.

I rubbed my eyes to try and wake up a bit more. Something's not right here.

As I took my hands away from my face, I realised how pale I was.

"Wait..."

I rushed around the room to find anything that may show my reflection. I soon spotted my reflection in a laptop screen.

I was...in L's body?!

"Oh god", I started touching my face (or L's face) to see if this was a dream or not. I had to be dreaming, right?!

Nope!

I stepped back in shock, then sprinted upstairs to my floor.

"RYUZAKI!!" I yell as I run.

L's Pov

I woke up.

Wait! I was asleep? That's odd.

Something wasn't right. I felt very different. Almost like another person!

"What am I doing in (Y/N)'s room?" I ask myself, looking around to find myself in (Y/N)'s bed. "And where is (Y/N) anyway?"

I pulled the covers off and stood up.

Then I noticed.

I was in (Y/N)'s pyjamas.

"Okay, what happened?" I ask myself.

I scratch the back of my head to feel very soft hair.

"How did my hair get so soft?" I ask.
"Okay, maybe (Y/N) knows something about this".

I go to walk out the room, when I catch myself in (Y/N)'s mirror.

"No way..."

I was in (Y/N)'s body. I examine myself.

"Well, at least I look beautiful", I say to myself.

I soon run out of the room, only to bump straight into (Y/N).

"Ryuzaki!" She shouts.

"(Y/N)!" I shout back.

"WHAT HAPPENED?!!" We both shout at the same time.

"I HAVE NO IDEA!" We say again.

"This isn't good" (Y/N) whispers.

"Why's that?" I ask.

"What are you you, dumb?!" She replies. "We can't work like this!"

"Good point. Well, it shouldn't be too bad", I say to her. "Don't worry too much. We're just gonna have to put up with it until I can figure out how to switch our bodies back".

"Alright", (Y/N) says, still a little worried.

"Now, let's go downstairs and get to work", I say to her.

"Put some clothes on first!" She shouts at me, her cheeks going a little pink.
"I don't want to see myself walking around in pyjamas!"

"Okay, I'll change. You head downstairs", I say to her.

"Can't I take a bath?" She asks me.

"I don't want you doing anything to my body", I simply say to her.

"I'm not gonna do anything! I just don't want to have an itchy scalp every 2 seconds!" She pouted at me and started scratching her head (Or my head, for that matter).

"Besides, you'll look cuter if your hair is all soft!" (Y/N)'s says to me and starts giggling.

"Don't say such things", I look away from her. "Fine. Take a bath if you wish, just don't do anything else".

"Whatever", (Y/N) replies.

We soon walk in different directions. I head back into (Y/N)'s room, while she walks into her bathroom.

"What will I wear?" I ask myself, as I peak into (Y/N)'s wardrobe.

"But wait! Aren't I being a pervert for doing this?" I ask. "I mean, I'm not really a girl and yet, I'm looking through a girl's wardrobe". I put my finger to my lip. "But (Y/N)'s allowing me to change clothes, so I guess it can't be that bad".

I start looking through (Y/N)'s clothes.

"How can (Y/N) have so many clothes? It's aggravating!" I say to myself.

I pull out a long sleeved black shirt and blue jeans.

"I guess this'll do", I say.

(Y/N)'s Pov

I start running the water in the bath. I soon look around and realize something.

"Does this mean I have to use men's shower gel?" I ask myself, blushing. "But I'm not really a guy!"
I sigh loudly. "This is gonna be really annoying!"

-Lil Time Skip cause I'm lazy lol-

(Y/N)'s Pov

I came downstairs, dressed in a cleaner pair of L's clothes that I found in his room.

I spotted L, or rather myself, sitting hunched over, drinking tea. I didn't even like tea! Why would he fill my body up with that disgusting beverage?! And it's probably filled with about 12 sugars! I'm gonna end up with diabetes!

I spot Matsuda walking over to L.

"Hey (Y/N)! You seem to have picked up Ryuzaki's quirks", he said, laughing.

"Wha-" was all I could say.

"Yes. I guess so", L says to him.

'What are you doing?! You can't say that!' I thought to myself.

"Wow! You even sound like Ryuzaki too!" Matsuda says.

"I don't see how this is relevant to your work, Mr Matsuda. Please don't get distracted". L says back to him.

"Alright", Matsuda says, walking back to his seat. "Jeez, did you and Ryuzaki swap bodies or something? You act just like him!"

'YES! Matsuda! We DID! You really are an idiot!' I thought. I grabbed L's hair, and almost ripped it out! I couldn't go on like this.

I walked over to L and sat down next to him, in a normal sitting position.

"What are you doing?!" I ask him.

"(Y/N), I don't like to see myself sitting normally like that", L says to me, ignoring my question. "Since you are in my body, if you sit normally, it would make my deductive skills immediately drop by roughly 40%".

"What do you want me to do?!" I whisper yelled to him. I didn't want to cause a fuss. "I get cramps when I sit like you do for more than 5 minutes!"

"Just give it a shot", L says.

"Fine!" I sat myself in the same way L does. It was a lot harder doing it in L's body to be honest. For obvious reasons...

I soon spotted the massive plate of sweets L had sitting next to him. He reached over a grabbed a handful of sweets and popped them into his mouth.

"Right! That's enough!" I say, grabbing his plate and pulling it away from him.

"What are you doing (Y/N)?" He asks me, facing me and giving me a sad look.

Honestly, it felt really weird seeing my own face give me the puppy dog eyes.

"Unlike you, I don't have high metabolism! You'll make me fat if you keep eating all these sweets!"

L didn't say anything, but his face changed from sad, to pissed off.

It was then that I noticed something else...

"Uh...Ryuzaki...you're not wearing...a bra..." I say, pointing to my body's chest and blushing madly.

"I don't know what that is, or how to use it", L simply replied.

I flinched. "H-How-?"

I didn't even bother finishing my own question! I slammed my head on the table and groaned like a little kid.
I had to put up with seeing myself without a bra on? It's so embarrassing!!

"I've found what we're looking for", L says pointing to his computer.

I look up from the table and stare at the screen. "What is it?"

L put a finger to his lip. "I'm still not able to figure out how this happened or what it is, but I do know that we will go back to our own bodies after today", he said.

"So I have to stay like this for the rest of the day?! What will happen when I need a wee?!" I whisper yelled, blushing.

L covered his (my) mouth with a hand. "Stop asking stupid questions and figure it out for yourself!" he said. I saw his (my!) cheeks go a little red.

"Fine! I'll hold it!" I say.

"You're not damaging my system just because you're afraid of using the toilet!" L whisper yelled to me.

"Well, what do you want me to do?!" I whisper back.

I could tell L was getting really annoyed at this. I don't blame him.

"Forget about it", I say to him, and put a hand on his shoulder. "What should we do in the meantime?"

"I wonder what sex feels like as a girl", L bluntly comes out with.

I blush madly, stood up and smacked the back of his (my) head!

"WHY WOULD YOU THINK THAT?! YOU TOLD ME TO NOT THINK THINGS LIKE THAT, BUT THEN YOU GO AND SAY SOMETHING LIKE THAT?! WE'RE NOT DOING THAT!! WHAT'S WRONG WITH YOU?!" At this point, I didn't even care if I was shouting! L's being weird!

Everyone turned to face us. I stood there, breathing heavily, anger and embarrassment, rushing through my...L's body!

"Why's Ryuzaki getting so flustered? That's not like him at all", Matsuda says.

"That can't be Ryuzaki", Aizawa said. "And that can't be (Y/N)". He pointed at my body. "You see Matsuda? They act too much like each other. They must have switched bodies or something".

"Switched bodies?!" Matsuda said, surprised.

I turn to face the two and start clapping. I was still pretty pissed.

"WOW!! Well done! You finally clicked onto it!" I say sarcastically, and then stop clapping. "ARE YOU STUPID?! IT WAS OBVIOUS FROM THE START!!"

I startled the two men, and they quickly got back to work.

-Another Time Skip-

L's Pov

"I'm hungry!" (Y/N) moans.

"Here", I hand her the plate of sweets I had.

"I don't like those sweets! I want a proper meal!" She yells.

"I'm not letting disgusting food enter my body", I reply.

(Y/N) sighs. "Guess I'll starve then!"

I couldn't seem to get anything past her. How did I fall for her?

"Stop complaining! We don't have long left until the end of the day anyway, so you just have to wait patiently", I say to her.

She sighs again. "Look, I'm sorry for being a bit of a bitch, I just can't seem to get used to this!" She says, calmly this time.

"I understand. It is difficult. We are different", I reply.

I looked at a clock to see the time was 11:02pm.

"(Y/N), you should get some rest", I say to her. "You seem tired".

"Yeah okay, but you need rest too!", she says, grabbing my arm. "I don't wanna be extremely tired in the morning. Come to bed with me!"
Her cheeks go slightly pink again.

"Oh okay then", I reply, getting up and following (Y/N) to her room.

We cuddle up in (Y/N)'s bed, but it kind of felt weird. I was hugging my own body, which was just really embarrassing, but I didn't question it.

"Now, get some rest (Y/N)", I whisper to her. "The sooner you go to sleep, the sooner it will be morning, and you'll be in your own body again".

I got no response. She must already be asleep. I snuggled up next to her, and ended up falling asleep myself.

-Time Skip To Next Morning-

(Y/N)'s Pov

As soon as I realised it was morning, I immediately shot up out of bed and rushed to my mirror.

"My (E/C) eyes! My (H/C) hair! I'm me again! I'M (Y/N)!" I start jumping up and down, celebrating.

L soon woke up and rubbed his eyes.

"Looks like we're back to normal", he said to me.

"Yep!" I was so happy. As much as I love L, I do love my own body too.

As I was dancing in the mirror in front of me, I felt L's arms wrap around me and his chin rest on my shoulder.

"You have no idea how happy I am to see that beautiful woman I have fallen for", L says, kissing my shoulder.

I giggle. "I could say the same to you".

L seemed puzzled. "But I'm not a woman", he said.

"Yeah, but you are beautiful, and I have fallen for you too", I giggle, kissing his cheek.

He smiled at me. "Cheesy, but I like it", he says as I start laughing.

I turn around to kiss him. We share a nice, sweet gentle kiss, turning our heads to deepen it.

As we break away, L says to me, smirking:

"I wish we could have shared a kiss when we were in each other's bodies. I kind of want to find out what my lips taste like".

I blush and playfully hit his arm, giggling.

"They taste really sweet, like always!" I say.

(A/N): And done!! Sorry this is so long. I'm too lazy to put it into two separate parts. I really like this part. I thought it was funny! I hope you guys enjoyed it too! See you in the next part! :)