Earth ???
3:05 A.M
October 31, 2020

Loud and heavy gasps escaped (Y/N)'s bleeding lips, body cracking from the brute impact of being hurled across the room, head meeting the cold marble wall first. (Y/N) rose unsteadily to her feet, feeling a sharp pain on her left arm.

She choked a cry as she sees a large broken mirror penetrating her inner elbow joint, the wound slicing through her muscles and bones. Her wound is heavily oozing out blood— it's sickeningly thick, sweet metallic scent, had driven (Y/N) into a state panic. (Y/N) lightly press her index finger against the sides of the cut, evaluating how painful it would be to pull the mirror out.

'Calm,' she told herself. 'You have to stay calm or you won't solve anything (Y/N).'

(Y/N) winces, tears pricking the edges of her eyes as the pain swirls without mercy.

'Think! The inner elbow joint contains the cubical point— there it holds many of the major veins. Pulling the mirror right away would cause heavy bleeding; my ligaments are already damaged so I can't move my left forearm—'

(Y/N) sucked in a deep breath, thoughts spinning faster than a tornado.

'Towel. I need a towel to wrap around my triceps to momentarily stop blood flow to pull the mirror away because if I don't, it could cause infection. Stay calm (Y/N)... stay—'

The floor swayed under her feet as colorful spots contoured the sides of her eyes. But after the initial surge of pain and hallucinations, her wound suddenly ebbed to numbness. The glass that punctured her skin had fallen to the floor in a loud clunk, scattering the remnants of the red liquid all over the ground. And her muscles, pulsing with new energy and power, moved in circular motions, restitching itself back to its original position, leaving no traces of the laceration that scared her precious skin.

She blinked.

It's gone.

The wound is gone.

(Y/N) recoiled back in shock, eyes glaring at her own limbs that healed itself within seconds. Snapping her head up, it finally came to (Y/N)'s realization that she was no longer in the comforts of her own home with Doyoung and the rest of the boys. She was in a large white, grey, and black marble bathroom with a jacuzzi tub situating on her right, a shower on her back, and in front the now shattered vanity mirror she came through. Beyond the mirror laid three glass square windows, parted by two white beams of concrete in between.

She took a step forward, drinking every sight of the foreign city past the panoramic glass, observing new architectures she couldn't fathom as the towering buildings graced the skyline with their magnificent framework. Below on the streets, it bustled with life despite the late hours of the night; men, women, and children laughed boisterously, celebrating a festival alien to (Y/N).

"Where am I?" She asked to no one in particular, still in awe of the scenery.

Although she was feeling lost and confused, scared and anxious, (Y/N) strained for her heart to remain unperturbed. 'Evidently... crying, complaining, and standing here idly is nothing but a waste of energy plus time,' she thought. 'I have to get moving to figure this shit out.'

The (h/c) headed female have the knowledge, the smarts, to understand the circumstances, just as long she wouldn't allow the worries get the best of her. If she wants to go back home... she mustn't be frightened to discern her new environment. And she clearly knew that, but fear nonetheless lingered.

'Think of this as an another assignment where I start out from scratch. The prompt: how did everything came to be? I have to work to solve my problem and of course along the way, there will difficulties, things that will make me want to stop and give up.' (Y/N) pauses, gathering the courage and strength to push on. 'Let's start with me going into my room. That person that I saw in the mirror... that person was me... but not me.'

She looked down, seeing her reflection on the broken mirrors. Tears still stained her cheeks, reminding her what the other person said.

"You will suffer. I made sure of it."

(Y/N) wheezes out in pain from overstimulating her mind. She wiped her tears with her hands. No matter what, she couldn't remember what her alternative said beforehand— before Dooyoung called out her name out of worry, and it frustrated her so much. As (Y/N) studied her appearance more, she realized what she was wearing— it was the same as her alternative's.

"It doesn't make sense..." (Y/N) mutter, voice trembling. "Nothing makes sense. Did I become her? Could it be... that what I saw in the mirror was my parallel universe twin?! Fuck. Everything is fucking crazy right now. I sound fucking crazy! Creating a report about parallel universe is one thing, but experiencing it a whole another thing!"

Thoughts raged like a wild electrical storm. "If this shit is true... the multiverse is definitely real... then if I'm right, the difference between this Earth, if this is even Earth, and my home Earth is astronomical. The laws of nature that I know off doesn't exist here, hence my new ability of healing quickly. That also means people that doesn't exist in my Earth exists here.

"Oh man holy shit, I'm smart, good one (Y/N), keep it up." (Y/N) patted her shoulders.

KNOCK KNOCK

A pounding on the bathroom door startled (Y/N) to stand back to her feet. Cautiously, she opened the door, revealing a woman, about five foot four inches, dressed in a long-sleeved sheer black gown; her neck and ears was adorned with extravagant black stone jewels laced by the slightest touch of gold.

'Exhibit A: this woman. I have no idea who she is.'

"What's taking you so long? The festival is almost over and the guests down the hotel's ballroom have been waiting for your arrival."

A flash of color appeared at the center of (Y/N)'s eyes, the neon blue hue traveling at the speed of light around the sphere of her irises as she automatically scans this woman's identity, transferring the information to (Y/N)'s brain.

(Y/N) blinks, then refocuses.

Name: Lee Ji-Eun

Age: 3,000 years old

Code Name: IU

Occupation:
Owner of Hotel De Luna

Powers/Kind:
•Once a human, but was cursed so she's now a roaming spirit.
•Can teleport, gifted in weaponry and combats.

Power Rank: 7.4/10

Soulmate: Yeo Jin-Goo

(Y/N)'s nonchalant expression turned sour and quickly, Jieun investigates the sudden shift. It was too late, the flash disappeared before she could identify it; it was like reaching desperately for an escaped ballon— the string dangling so tantalizingly close but the wind pushed it away and it's lost forever.

'What... what was that just now? Should I be freaked out that she's a three-thousand year old spirit or that I was able to read her characteristics like an open book?'

"(Y/N) are you okay?"

"O-Oh yeah I'm fine," (Y/N) stuttered, drawing herself backwards to take a breath. She chooses her next words vigilantly. "I might've, let's say hypothetically speaking, forgot what the festival is about so hypothetically, for the sake of not arguing with one another, you can maybe calmly explain it to me?"

Jieun stepped forward, brows creasing, face tensing, as she eyed (Y/N) in annoyance.

She sighed, answering straightforwardly for the sake of the time. "It's the Blue Moon Festival. It's where creatures from all over the country gathers here in Seoul every Blue Moon to celebrate unity. But the party down stairs isn't one for unity, as you might already know," her tone dropped, "the underworld lords are indeed waiting patiently for the star of the party."

"I'm not late. Everyone is simply early," (Y/N) feigned a joke, earning a playful scoff from Jieun.

Behind (Y/N)'s smiling face hid an underlying layer of troubled emotions from the words 'underworld lords'.

Just who is her other self and what was the purpose of this switch?

"How am I the star?" (Y/N) dumbly inquired.

"Don't even joke about the power that you hold," Jieun tugged (Y/N) forward, unmindful of the broken glasses laying on the ground as if it was some daily reoccurrences. In fact, (Y/N) truly doesn't know the power she holds; so far, she witnessed herself heal and understand a person's identity with just a look of their face.

"Oh please do elaborate, I'm not as bright as you are."

"You're asking me this either because you're fishing for compliments or you really are an idiot."

'I'm fishing for more informations about this world and myself.'

"Could be both," (Y/N) grinned. "But I'm just examining your intelligence about our friendship, that's all. And since you're not answering me—"

"Oh shut up."

Jieun sat (Y/N) down in her bed. (Y/N) was trying hard to not seem impressed of the interior of this hotel room; you could even say that this was a whole guest suite in an Italian palace to a stranger and they would believe it!

"You're the Black Mamba. Name derived from the serpent snake scattered across Africa. Though, the serpent is not named of their scales, which tend to be brown and grey, but for the color of the insides of their mouths," she stated with confidence as she began applying natural yet bold makeup to (Y/N)'s face, "and black mambas are well-known for having one of the nastiest venoms out there, sometimes it being called as the 'kiss of death'. You rightfully earned that title, (Y/N), because on the outside, you're like a harmless little girl asking to help her find her mommy, but in the inside, your mouth is black, coated with venomous toxins."

Jieun places her hands on (Y/N)'s knees, leaning down to her height and smiled. "Everyone wants to do business with Black Mamba, the most dangerous assassin to ever live, but their chances are slim, that's why everyone is trying their best to converse with the assassin, in hopes that they could extinguish their rivals in this dark, terrible world."

(Y/N) wanted to express her absolute disdain of her other self's profession.

Killing other people for profit?

Using powers to harm rather than do good?

(Y/N) unquestionably abhorred her other self. But (Y/N) doesn't have the liberty in this world; this isn't something to take lightly, to act based upon her own intuitions. People, enemies to be exact, will be at her throat 24/7, awaiting to revenge the love ones they've lost. If she dies, then she would have to say good-bye permanently, never seeing Doyoung and the boys forever— in naked truth, there would be no chance to say good-bye at all.

So for now... she has to play along until the problem is solved. Watching all of those assassin slash mafia movies and shows was useful after all.

(Y/N) applauded Jieun's explanation, assuming the role of her assassin self by giving a wicked, baleful smile. "You really do know me."

"Ahh I always love seeing that smile. Typical psychopathic slash cold-blooded (Y/N)."

"I prefer the term creative rather than psychopathic."

"Whatever you please," Jieun giggles, "now change to your attire."

(Y/N) examines the black dress that reached below her buttocks. It was... questionable. It wasn't distasteful to the eyes— in fact, it's perfect. The reason of the dress being questionable was because of its length. (Y/N) shrugged, asking little to no questions because who was she to judge someone's taste of garments? Especially when it's this beautiful?

As (Y/N) turns around for Jieun to zip up her dress, her eyes landed on the prodigious serpent tattoo on her back. Her mouth fell agape as she studies the execution of the tattoo slithering at the base of her tailbone, crawling in zigzag up to the nape of her neck. Her heart stopped.

She... she knows what this is... she drew this herself.

"The pill that covers your soulmate tattoo is in the living room," Jieun blankly stated. " the formula had gotten better. It lasts for 12 hours rather than 6."

(Y/N) remained quiet. She didn't know what to say.

"There are some side effects. Your soulmates will still feel your aura when you're near, but they won't be able to distinguish who it's coming from. If you're touched, it'll feel like a thousand needles piercing your skin. It's your body's way of fighting the pill." Jieun shakes her head out of disapproval. "I still don't understand why you're trying to cover it up."

(Y/N) recalled seeing Jieun's information and one of them was her soulmate being the man named "Yeo Jin-Goo". There was no such thing as soulmates back at her own world, let alone tattoos that could connect them to their other half. 'It appears that the name Black Mamba wasn't only stemmed from my other self's nature, but also this mark. But why would she hide it? Is it to protect her soulmates? Or does she disdain them?'

"I have my reasons to why I cover them," (Y/N) mindlessly answered, her eyes never leaving the mark,

"And what reasons are those, (Y/N)?"

'So, Jieun doesn't know why. How unfortunate... I'll have to discover the reasons myself.' "Valid reasons," (Y/N) said, finally snapping out.

"The universe will find its way to bring you all together. You can't hide forever."

"I can and I will."

Jieun snickers and she lightly pinches (Y/N)'s cheeks. "If you keep acting that way, I might think of you as a fool, (Y/N)."

"My father didn't raise a fool. A psychotic cold-hearted bitch, yes. But not a fool."

Jieun draws back, eyes suddenly flashing in sadness. 'Oh no, did I say something out of character?' (Y/N) panicked. "What is it? What's with the look?"

"It's just..." Jieun bit her lip. "You haven't talked about your father in a while. Anyways, let's go."

(Y/N) smiled. "Yeah, let's go."

'I feel trouble in this.'

.
.
.
.
.
.
A/N

Since I'm terrible at describing clothing, here they are lol

Y/N's:

IU/Ji-Eun:

—France💛💛