{While I'm updating this I will edit the other chapters because why not?}

No One's POV

'Katsuki?'

(Name)'s (e/c) eyes widen upon seeing the familiar ash-blonde hair and crimson eyes.  When Katsuki jumped up with his fists full of flames Kirishima activated his hardening quirk and charged at the two. 

(Name) jumps back and let Kurogiri create a dome around the students.

(Name)'s POV
Now with the students' transferred as planned, I decided to scout each area. I step into my shadow expecting to appear in a dark realm but I realize that I didn't go anywhere. 

Feeling a presence behind me I jump away at the sound of a loud boom was heard behind me. I turn my head seeing the hero Eraser Head with his barred goggles over his eyes. I glare at the older man as he flings his fiber bandages at me. Launching myself into the air I land beside Shigaraki as he allows the villains to attack.

The moment the villains started their attack, Shigariki and I watched. The shouts of the villains rang in my ear as I watched various villains being thrown or smacked around.

"Shigariki, I'm going."

I say with a slightly angered tone. I hear Shigariki hum as I saw him nod his head in the corner of my eye.

"Your sister will be fine."

Shigariki mentioned in an I-hope-you-know way. I only sighed saying "I know." Before stepping back into my shadow disappearing slowly into darkness.

When I looked around I saw different doors that led to different places but I was looking for something else besides a door. I was looking for a ribbon.

Since (sister) and I are twins, our souls are connected to this dark realm just as we are. In the corner of my eye, I spot a shining, orange ribbon. 

"Bingo."

I smile walking my way to the ribbon that led to a door. I smile as I make my way to the door that would lead me to my polar twin. When I open the door I was surprised to see various buildings in ruins.

'Now to find (sister).'

BOOM!

"DIE!!!"

Looking in the direction of the explosion, (name) sighed.

"And he just has to be here too. Maybe he won't notice me." (Name) hoped for herself.  She wasn't ready to face any questions that the hothead could have for her.

Katsuki's POV

As I blasted those worthless small fries, I couldn't help but think about how I saw (name)- or someone that looks like her.

Her (e/c) eyes.

Her (h/l) (h/c) hair.

'Even if I've known her via social media, I still know her damnit!'

But something that didn't sit right with me was the fact that she seemed almost... disturbed when her eyes laid on (sister) and me. But when she looked at the guy beside her she looked... angry.

'What the hell is going on?!'

I shouted in my head setting off another explosion.

"DIE!!!" I shouted with rage. All of this bullshit was making my head spin.

"Kachan! Calm down- ack!" (Sister) shouted before getting hit by a villain's quirk. 

No One's POV

"(SISTER)!"

Kirishima shouted as he slammed some guy's head into the ground. Suddenly the air became thicker, darker, scarier, and ominous. Everyone stopped what they were doing- even the villains looked scared. 

It wasn't until everyone slowly turned their head to the sensed malice. When the villains saw who it was they became pale. 

"O-oi, Bakugo, don't they look a little too scared?" Kirishima asked worriedly. Sweat had slowly dripped down his face upon seeing a feminine figure. Katsuki noticed the (h/c) hair and (e/c) eyes- but something was different... the eyes. 

Not the regular shine and glimmer with a slightly dull look.

No. They were glowing with a nasty- almost cruel- gleam mixed with her wonderous (e/c) color. If glares could send you to hell than every being there were fucked.

"Who. Hurt. (Sister)?"

(Name) questioned while glaring at every villain. When no one spoke up, (name)'s glare only intensified before looking to (sister) for answers. Even now, (sister) was shaking.

'This is not good. At this point, she's angry beyond belief meaning her monsters are more vicious. Crap crap crap crap crap crap! CRAP! Kachan looked like he knew her too. Does he? He saw her one time, I believe. AGHHH! WHAT DO I DO?!'

(Sister) felt shivers go down her spine at the bare thought of her furious twin and what she can do. Without thinking, (sister) spoke up.

"(Na)- Shadow... I-I just got h-h-hit by d-d-d-debris, That's all!"

If glares could send you to hell then everyone would be fucked right now. No one dared to speak, for they were too scared to. It would only make matters worst. Everyone knew that.

Not even in a blink of an eye, an enormous shadow beast appeared out of nowhere behind the one that (sister) called 'Shadow'. Then, (name)'s eyes became dull with cruelty.

A point of a finger.

That's all it took for a single villain to be grabbed by the terrifying beast before being ripped to nothing but flesh, blood, and bones. Again, (name) gazed around.

"Who. Hurt. (Sister)?"

Her voice sent a bone-chilling shiver up everyone's spine as her eyes remained dull and her expression almost dead. No one could answer. Fear had taken over. They knew that right now- this very moment- they could lose their lives.  

(Name) raised her arm, ready to point her finger again but was interrupted when someone had raised their hand.

"I-I did it. I-it wa-was by-by accident-t!"

The villain then got down on his knees, bowing his head. Everyone was expecting the monster to destroy him or rip him up. But that was until (name)'s lips started to slant upwards into an unnerving grin.

"Accident, my ass." This time- not the one shadow beast- but five appeared behind her with grins that weren't half as scary as (name)'s. The villain that had hit (sister) started to plead and beg, asking for his life to be spared. 

Katsuki, Kirishima, and (sister)'s eyes widened as the scene that unfolded before them was forever burned into their memory. The scene of the man's limbs being torn right off and chewed on before they grabbed and feasted on him. 

As if that wasn't bad enough, (name) looked over where the three UA students watched in horror as the man was tortured right in front of them.

"Wanna join the fun?~"

Her voice was eerie and before they could blink, (name) had appeared right behind them. Instantly, the three jumped out of the way.

"(Name)! Stop it! That's enough!"

(Sister) shouted on the brink of tears. Never before has she seen her twin so... terrifying. Kirishima and Katsuki looked at the younger twin.

"Wait! You know her?"

Kirishima asked out of breath. He never knew he held it in until he jumped away from the horrifying person who came from nowhere. (Sister) didn't answer her classmate knowing that she would probably be interrogated for it later. 

When the trio saw that the (h/c)nette stopped moving they looked at each other, wondering if they should run for it or not. 

"Shadow."

They heard a voice. They looked at (name) who had put a finger to her ear.

"All Might is here."

Those four words made the trio gasp. All Might. The hero of the day... has finally come.

(Name) nodded, stepping back into her shadow, sinking down. She looked at the teenagers in front of her "see you later~" her gaze then tracked onto Katsuki who stiffened up before her form had completely sunken down into the shadow. 

Her form. Gone.

Their minds. Clouded with nothing. Nothing but... fear.

And they knew- they knew that this truly wasn't the last time they were going to see her. The strange one that (sister) called both 'Shadow' and '(name)'. Neither Katsuki or Kirishima knew which name was the real one.