A/N: This is an adaptation of the song Owari no Sekai Kara by Nagi Yanagi and then covered by Hatsune Miku, which is why it's under vocaloid. I was frustrated there was no anime/manga/novel accompaniemnt so I added one myself! I hope you guys like it! Feedback is welcome!

Beep beep beep. The first thing I hear when I wake up in the morning is my alarm. Just like yesterday. Just like the day before that. Just like every day before. However, today is completely different. After all, I finally worked up my resolve, right? Swinging my legs over the side of my bed, today I walk with a little jump in my step.

Moving into the bathroom after I've gotten dressed, I smile, holding up different ribbons to my hair.

"Should I go with light pink or cream today?" I mutter, as my little brother bangs on the door.

"You're taking too long!" He complains. "I gotta go!"

"Well you can hold it! This is important!" I yell back, before turning my attention to my reflection. The light pink looks good enough, but the cream matches my uniform perfectly. Smiling, I use it to tie my chestnut brown hair into a ponytail in around the middle of head. Pulling back, I flash a grin and pose just a bit.

"I can tell!" I declare as I exit the room, my brother racing in after me. "Today's gonna be a good day!"

…

"Kou-kun!" I call, trotting down the front steps of my house and over to the boy waiting in front of the lawn. "Did you wait long?"

He looks up from his phone to glance at me, smiling in reply.

Oh, those eyes! They're so cute! Kouta Ichikawa was the type of person to smile with his whole face. And I lived for those smiles, the way his handsome gray eyes squinted at me, the way his face lit up, the wide grin he'd give me. Oh, how I wanted that to be only directed at me. I blinked out of my trance as I realized he was saying something.

"Nagi?" His voice, laced with just a bit of worry was perfect too.

"Yeah?" I managed to answer back

"Did you hear me at all?"

"Um…" I let my voice trail off and he sighed.

"Figures. I said, I have something to tell you when we get to school. Okay?" My heart practically skipped a beat.

"Y-Yeah! Of course! You could tell me now, y'know!"

"No, I gotta show you first."

Show me? Show me what? Flowers he grew just for me professing his love? A giant banner hanging from the school window professing his love? The school's cheer club performing a routine for me professing his love? A ring professing his love?

"Nagi!" He yells and I look up to see him far in front of me. "Hurry up! I wanna get there in time!" Deciding that either way, what he wanted to show me involved professing his love, I let out a happy squeal and skipped after him, on cloud nine.

…

"We're here." I murmured, barely able to contain my excitement as we entered through the gates of our school.

"Yup." He replied, noticing at something just out of my sight. Eyes widening, he grabbed my wrist and practically dragged me over to the side of the school and behind the tall brick wall.

"K-Kouta?" I ask incredulously, blushing like mad.

"Quiet!" He shushes me. "Look!" I do.

A beautiful girl has just entered the school's gates, walking with another girl. She has long silky black hair and gorgeous gray eyes that rival Kouta's. Her skin is flawless porcelain and the way she carries herself is like a princess. I know who that is. That's Hime Utsukushii, a second year at our high school. She's the school's idol, a straight A student, award-winning athlete and her beauty is second-to-none. As shock starts to overtake me, I rigidly turn to look up at Kouta.

He's blushing.

My eyes widen and my smile melts off my face. Now it's my turn to be embarrassed. He was calling me over to profess his love. Just not for me. For Hime Utsukushii. I'm too shocked to feel any embarrassment for how I acted. Right now, all I can feel is my heart splintering into a thousand tiny pieces.

A small whisper from Kouta brings my attention back to him. Right. I'm his childhood friend. And a girl. He wants my help. He wants me to be his friend. I need to be supportive. Forcing a smile onto my heartbroken face, I elbow him in the side. He grunts, knocking into the wall.

"Hey!"

"So, Hime's got another guy fawning over her, huh?" My voice cracks, and I cough slightly before continuing. "You have quite a struggle ahead of you, my friend!"

He blushes brighter this time and stammers out a response. "I-I know that! A-And it's not like her like her that much or anything! I just think she's kinda p-pretty, that's all."

As another knife stabs my chest, I flinch before twisting my face into a smirk.

"The tsundere attitude is so not cool. That's waaay out."

"Hey!" He cried, embarrassment plain in his voice. As he chases me around the yard, I notice Hime watching us. She quickly turns away when she realizes I noticed her, the slightest hint of red on her cheeks. That's it.

"I don't feel very good." I say suddenly, stopping abruptly. Kouta stops too. "I think I'm gonna go home."

"Eh? But you seem fine to me."

"It's not polite to question a lady."

"What lady!" Instead of answering, I just chuckle.

"I'm heading home."

"Should I walk you ba-"

"No!" I say all too abruptly. "I-I mean," I stammer, waving my hand back and forth. "There's no reason for you to miss school too. Use this as a chance to get closer to Hime."

"Are you sure?"

"Yeah. See ya." I say, smiling once again as I run away from him.

"Yeah." I hear him respond. "See ya…"

…

I'm not sure where I thought I was going to go, but before I know it, my feet have led me to a park, the same one Kouta and I always played in. Breathing hard, my hand goes to rest on top of the gatepost. I don't see any kids in sight. Heading straight for the hollow slide playset, I crawl into the empty space that once used to be so big. And finally, finally, I let my tears fall. As they trickle down my cheeks, I don't even bother to reach up and stop them.

"I'm so stupid," I mutter. "Why did I ever think he'd like me back? Things never work like that. But even so… but even so… " My voice trails off as I hug my knees to my chest.

How would you like to go back in time?

I jump at the voice I hear in my head. "Wh-Who said that?!" I exclaim, looking back and forth but seeing no one.

No one important. Now then, would you like to go back? To when your feelings for him started?

"...how do you know I like someone?"

Because I'm you.

"What?!" I practically yell, before clamping my hands over my mouth. "What do you mean?' i ask again, in a lower voice.

I'm you. Or more precisely your power.

"Power?"

The members of your family each have the same power. To go back in time. Your mom, your dad, your brother and your sister. Each one of them. Including you. It awakens at a time when you're emotionally distraught as a sort of failsafe. To fix any mistakes.

"...so I can go back in time? And I can make Kouta like me back?"

Yes.

"I'll do it!"

Really?

"Yes!"

I have to warn you, there are side effects.

"I don't care!"

Alright then. But don't blame me if you regret this.

"I won't!" I say happily as the world around me starts to distort and blur. Looking out at the sky, I see it start to change rapidly between day and night. At the time, I had no idea how much I would wish I had never listened to the voice inside my head.

…

I was awakened to a little boy's cry of "Mommy, there's a strange girl in the hideyhole!" Jolting awake, I looked out to see his mother ushering him away.

"It's okay," she was saying. "I'm sure she's fine."

Climbing from the hole, I step outside and take a look around. Nothing looks any different. Of course, we only went back a few years so that's not surprising. Just then I heard someone calling my name in an all-too familiar voice.

"Nagi!" Turning around, I see Kouta running towards me. Little Kouta, shorter, not as muscular, but with the same messy dark brown hair and gray eyes. I break into a smile. Stepping forward, I open my mouth to reply to him, but instead he just runs past me. Still calling my name.

"K-Kouta!" I stammer. "What are you doing?" He stops and turns to look at me.

"What?" I'm shocked to find tears being blinked back in his eyes. He looks distraught and worried.

"Do I know you?"

My heart stops. I step forward and hear a splashing noise. Looking down at the large puddle I stepped in, I see. A girl with chestnut brown held back by a cream-colored ribbon. Big brown eyes red from crying. And a highschool uniform. And I realize. I went back in time. But I stayed a 16-year-old girl instead of becoming 10 again. My knees buckle and I fall, my reflection jolting forward. As tears well in my eyes, I whisper.

"I have to go back." And I hear the voice in my head.

That's not how it works. You can't.

And then they're falling. My tears, but also any hope I had left. Shattered. Just like that. I hear footsteps approaching me and look up to see Kouta, with a cautious look on his face and a handkerchief in his hand.

"Uh, here." He mutters awkwardly. "Girls shouldn't cry." My mouth moves but no sound comes out. Finally, I accept it bringing it to my face to hide from him.

"Thank you." I whisper.

"U-um.." He starts again and I raise my eyes to meet his, those beautiful gray orbs. "Well, this might sound weird, but… m-my friend kinda just… disappeared. Like, vanished. Right in front of me. A-and you look like her. Like, a lot actually. Do you know her? Her name's Nagi." My heart squeezes again at these words but just as I'm about to respond I stop. No. It can't possibly be a good idea to tell him. And so, I simply smile.

"No, sorry. Maybe she went home?"

"No! I told you, she vanished!"

"You must have been seeing things." I reply, staggering to my feet. "Keep looking." He gives me a strange look before walking away.

"You can return that later okay?' He says and resumes his frantic running around, searching. Searching for me.

"Don't go." I whisper. "Don't leave me here. Alone." But I force myself to turn and walk. Away from the park. Away from him. Away from my hopes. Away from any life I might have had with him.

"So this is is the price of trying to change the future."

…

Months passed. I returned to my family's house and explained to them what happened. They all looked at me with pity on their faces, pity for the foolish me who tried to change the future, tried to change her life. And failed. I entered highschool as a transfer student. And I never saw Kouta. I went out of my way to avoid him, until one day, finally, he found me.

"Hey!" I heard a voice yelling. Stiffening, I started to walk faster.

"Hey!" There it was again. Finally, I stopped and allowed him to catch up. "You walk fast, nee-chan." I forced a smile.

"It's our size difference."

"Yeah I guess." We stand in awkward silence until I can't take it anymore.

"So…" I trail off and realization flashes on his face.

"Right! I came to ask for that back. The handkerchief."

"Oh. Yeah. Here." I say, fishing it out of my school bag before handing it to him. "Why do you want it so suddenly?" He pauses for a moment, before replying.

"We're moving."

What.

"My parents wanted to do it earlier, but they agreed not to because Nagi was here. But now that she isn't, there's no reason for me to stay here."

"Why…" I take a deep breath before continuing. "Why did her being here make a difference?"

"B-because! Because it was her, y'know, her. Because… because I wanted to be with her. Forever I guess. But that can't happen now." His voice. It sounded so sad, so lost, so hopeless. And I couldn't take it anymore.

"Kouta," I say, as I feel tears well up. "My name is Nagi Yoruko. I'm Nagi."

"What the hell? You're making fun of me!"

"I'm not!" I cry. "You say your favorite food is ice cream but it's really usagi. You sleep with a stuffed rabbit named Mr. Buns. Your best subject is math but you say you're bad at it to fit in. You actually love playing tennis but joined the soccer club instead because that's what you're friends chose. You-"

"Okay, okay!" He interrupts me. "You… but… how…?"

"It's a magic power. I went back in time because you fell in love with a girl who wasn't me. I wanted to change it so that you'd like me back. I came back in time. That's how. But the same person can't exist two times at once so my past self was erased. That's why I disappeared. that's why you were crying."

As I watch the realization settle into his face, I hear the voice in my head for one last time.

You should never have told him.

And the world starts to distort. I let out a startled yelp and Kouta shakes slightly. Fast as lightning, he grabs something from his bag and places it in my hand as the whole world starts to waver back and forth.

"Come back!" I hear him yell. "I'll be waiting! Nagi, I-"

And the world goes black.

…

When I open my eyes, the first thing I see is gray sky. Sitting up, I look around. A wasteland. A deserted, ruined city awaits my gaze. All in hues of gray. Not a single color anywhere. Except for me. I smile, before starting to laugh.

"So this is what happens." I say between laughs. "This is my new price, huh?" Flopping back down, I look at what's in my hand.

Unfolding the small piece of paper, a boy with messy dark brown hair and gray eyes smiles back at me, frozen in time in this photograph. I bring a hand up to my mouth, choking back sobs.

And I lay there.

And I cry.

Finally, standing up, I survey the world around me. Placing the photograph in my pocket, I step forward, beginning my journey through the wasteland.

"I'll see his smile again."

And it's a promise.