Switched [L x Reader AU] ? Death Note

Light paced around, mind racing. What the hell happened to Ryuzaki today? One second he was there, the next he was snapping at him again.

Light was the kind of person to pick up on small things. So these small subtle changes in Ryuzaki's behaviour were noticeable to him. They always seemed to proceed him zoning out. Ryuzaki dissociating isn't new, he'd done it since day one. But the change in behaviour seemed to be more common nowadays.

Why? He didn't know. But he was suspicious. If he could figure out why then maybe he could find a weak point. And thus, overthrow the worlds greatest detective. Whatever it was, you were definitely in on it. Always around him, defending him, whispering to him. Something was up. And light wanted answers. So tonight was the night he decided to spy on your night shift with him.

His behaviour was different again. Laid back, sitting normally, laughing, using slang. This wasn't like him at all.

"No I'm serious- it was the same place in the same parking lot"

"How on earth did you manage that?"

"I was a clumsy kid I guess. But what kind of luck is that? Cutting open your knee one week after you already did in the same parking lot on the same knee? That road was hard and I do not recommend face planting into it" he laughed.

"Of course you are the one that gets the body all scratched up" you replied.

Light had no idea what you guys were talking about. Why you were referring to his body as 'the body' and saying 'you of all people' when there's literally only one person there.

"I was definitely the more rowdy kid- oh for fuck sakes can the others shut up for two seconds? I'm trying to talk here" Ryuga sighed. Of course, Light didn't know it was Ryuga though.

"Who's close?" You asked.

"L, Ryuzaki, Deneuve... everyone. God I don't know what they're doing but it's freaking loud"

What? That didn't make sense. Light watched you both, confused out of his mind. All those names are just aliases right? What does close mean?

"Anyway- Nope Jesus Christ I'm gonna switch..." Ryuga said, putting his head in his hands as the dissociating set in.

"Guess I'll talk to you later then"

Light watched, after a few minutes of 'Ryuzaki' sitting there in silence and trying to bring himself back to earth, he picked his head up and immediately the mannerisms looked different. What just happened?

"Hey" you said.

"Hi, sorry. I dunno why we switched" he replied.

"It's fine. Lemme guess, Ryuzaki?"

Just the way they spoke sounded different. Ryuga was more slangy and laid back, Ryuzaki was flat and serious, L was shy and bubbly and Deneuve was energetic and childish.

"Yeah, you're getting good that this"

He adjusted his position to sit in his usual curled up pose, looking around the room to gather his surroundings.

"Ryuga said it's loud in there. What are you guys up to?" You asked.

"Playing with Deneuve, kids are a lot more energetic than I am that's for sure. But Ryuga has to go check the headspace anyway so he was bound to switch sooner or later"

The system agreed that Ryuga had the best access to the headspace. He seemed to be able to navigate it deeper and in more detail than the others.

"Looking for that one other voice you've been hearing?"

"Yeah, haven't gotten far yet but still. Early days. Has work been done?"

"Yeah I covered for you. L started but then Light started freaking him out so Ryuga came out and HES been out all day" you explained.

"Thanks, you're a massive help you know. I appreciate that, we all do" Ryuzaki replied.

"Well I care for you guys. I'll help as much as I can. And if want I'll punch light for you"

Ryuzaki snickered at your comment, zoning out for a second then coming back.

"Ryuga likes the sound of that but I think it'll be safer to just not start fights at all"

"True. Just know if worst comes to worst I'll throw hands to protect you guys"

This was all very confusing, but things were starting to fall into place. It was almost as if you were describing multiple people in the same body. And every so often they swap places. Light only knew that as the now dead term Multiple Personality Disorder. All he'd ever seen about that was in movies. But maybe it was worth looking up if you and Ryuzaki were being serious. Deciding he'd heard enough, he went back up to his room. Pulling up his laptop and opening an incognito tab so Ryuzaki couldn't track his history, he typed in the former name of the disorder.

"Dissociative Identity Disorder? That's what is called huh?" He spoke to himself.

He clicked on an article about it, reading it over.

"So it's traumagenic? That detective has been through something..."

He looked over the terms, and suddenly all the conversations you were having made a lot more sense. And it was starting to make sense why 'L' went by so many names. They were more than just aliases.

"I see then... well worlds greatest detective it seems there's more of you. I wonder how many people are in that lanky body of yours..?"