~Haru's POV~

Flashback Age: 13

"What are you so scared of, little lamb?" Dr. Arai's voice sounded in the darkness. I was blindfolded and bound to an uncomfortable chair.

"W-what's going on?" I whimpered.

"A test."

"Why can't I see?"

He ignored my question, "I think I've finally succeeded, I've found the perfect one." His voice sounded like he was in a faraway trance.

"I don't like this." I sniffled.

The blindfold was ripped away and I cringed at the harsh light from a single bulb above me. I couldn't see far and beyond the small ring of light was only darkness. From the smell in the air, the look of the unfinished ceiling and the concrete floor, I had a feeling we were in some kind of basement.

A cool finger lightly trailed across my cheek catching the single tear that slipped from my hold, "You cry, every time, it's the sweetest thing." Dr. Arai licked my tear from his fingertip.

"What are you talking about? Why are you doing this?" More tears welled in my eyes, "I don't understand."

"Shh, little Haru, it's alright, I'll make it all go away, you just have to pass the test first."

I struggled, to no avail, against my bonds.

"A man is on his way, he's going to try to kill you, Haru."

"What?! No!" I struggled helplessly against my bonds.

"If you pass the test, I'll make all the bad things go away." Dr. Arai smiled.

I screamed for help and flailed against my bonds, but no matter how hard I struggled I couldn't break free.

"Kill him before he kills you, and you pass."

"No! Let me go!"

"Come now, Haru. You fight it every time, but you haven't failed me yet. You've passed every test with flying colors."

What was he talking about?

There was movement in the darkness, drawing nearer. My heart pounded in my chest as I was gripped with terror. Dr. Arai released me from my bonds with a single swing of a knife before tossing it to the floor.

"Don't fail me now, little Haru." He smirked and disappeared in the darkness.

I heard someone let out a roar of rage within the darkness and screamed as a terrifying man with matted dark hair, wearing ragged and tattered clothing lunged out of the dark swinging a machete. Desperately I dove to the floor to avoid his frantic swings. He looked as if he'd been trapped down here for weeks.

He swung the rusting machete down at me as I hit the ground. I screamed and rolled out of the way narrowly avoiding a lethal blow. Searching for some way to defend myself, I grabbed the knife Dr. Arai had discarded and paused as I felt a sudden sense of calm wash over me once the knife was in my hand. It fit perfectly in my hand, like it belonged there.

The haggard man let out another snarl of rage and lunged at me. He was seriously trying to take my head. Activating my quirk, I smacked him across the face as he swung at me again. The blade froze in place at my neck, it was so close I could feel the rusted metal against my skin. I spun the blade in my hand and stabbed him in the chest before realization of what I'd done hit me. I'd just taken a life!

Shakily I released my hold on the knife and stumbled backward as tears rolled down my cheeks.

"So breathtaking to watch something so sweet and pure become so tainted and dark. You're beautiful Haru." Dr. Arai applauded as he stepped out of the darkness before placing his hand atop my head.

I woke with a scream as I was plagued by visions of me being trapped in that basement, killing hundreds of people who'd tried to attack me. My stomach churned unpleasantly and I ran to the bathroom attached to my room as the contents of my stomach decided to come back up. I wretched and expelled the contents of my stomach into the toilet until there was nothing but stomach bile left. Sweat clung to my skin causing the pale night shirt I'd been wearing to mold to my hot damp torso. When had I changed?

There was a soft knock at the bathroom door. I jumped and hurriedly wiped my mouth before turning to find a very tired looking Shigaraki leaning against the doorframe.

"...sorry...I didn't mean to wake you..." I said weakly before another wave of sickness took me and I threw up more stomach bile into the toilet.

A hand lightly splayed across my back, though I only felt four fingers applying pressure as Shigaraki rubbed my back in calming clockwise circles. "Are you hallucinating now?" He asked me curiously.

Once I'd successfully expelled every thing that had been in my stomach, I wiped my mouth and glanced around the bathroom. "I-I don't think so."

He nodded before getting to his feet. I watched him curiously as he grabbed a cup sitting atop the counter and filled it with cool water before returning to my side and extending it to me. "Drink."

I didn't have the strength or energy to question or argue with him and accepted the cup of water before taking a small sip. It was cool and refreshing and helped bring my body temperature down little by little.

Shigaraki watched me curiously, making me feel hyperaware of how tight and clingy the nightshirt was against my slightly damp body. I nervously avoided his gaze and reached up to flush the toilet. He didn't say anything, just watched me until I'd finished the cup of water before grabbing it from my hands and refilling it once more.

"If you asked me to... I would kill him for you..." He said quietly as I shakily sipped on the second glass of water.

"W-what?" I stared at him wide eyed.

"The man who did this to you..."

"W-why?"

"He made you cry." Shigaraki replied simply, "As whiny and annoying as you might be, I prefer it when you're not crying." He reached toward me and lightly swept the single tear that had slipped from my hold away. "That's reason enough for me." He shrugged.

I didn't answer, because the answer was no, I didn't want Shigaraki to kill him...as more memories of the people he'd made me kill began to flood my mind, I realized I wanted to be the one to kill him. "He made me a murderer..."

"He clearly didn't think that one through." Shigaraki scoffed.

"What do you mean?" I asked him feeling steadier and clearer headed after the second glass of water.

"The problem with creating a monster, they'll turn on you, eventually." Shigaraki smirked as he reached out and tucked a stray strand of my frosty white hair behind my ear, "And he created the perfect killer. Sweet and pure enough to make anyone drop their guard, yet skilled and precise enough to kill in the blink of an eye. He should be terrified."

Video- "Angel of Small Death & The Codeine Scene" By Hozier