Here it is—the last of the fic. Enjoy!

-A… Promise?-

Alone. At last.

The house was almost unnervingly quiet, actually, and the fine hairs at the back of my neck stood on end when the gentle creak of footsteps wandered slowly overhead—as though there was a feline creature on the prowl.

Well, she had certainly become a vixen…

Though my Virus hunting instincts warned me against it, I headed up the stairs to my room.

It took my eyes a moment to adjust to the low light and, by that time, Sumire was behind me, her arms encircling my waist to keep me from turning to face her.

"I knew you'd come."

I scoffed, but the sound dissolved into a gasp when she nipped the junction where my neck and shoulders meet. The action was gentle—a warning—and my body heated curiously in response, the little sting of pain proving to be less than unpleasant.

"Why the act, Lucia? Give in—submit to me."

"Who said it's an act?" My voice was a note too husky and I cleared my throat before continuing in a much more blasé tone, "And I don't submit to anyone."

Her response was so completely and utterly unexpected that I was caught off-guard, unable to react—

Warm hands slipped up along my thighs, pushing up the hem of my dress and allowing slender digits to stroke against the soft cotton of my underwear. I had soaked through the material and I barely heard her quiet exclamation over the sound of my own moan.

—until my mind caught up with my body and I struggled in her grasp.

If I was being completely honest with myself it was a token effort and she overpowered me easily, maneuvering me towards the bed and pressing me face-down into pastel green sheets.

My body responded immediately, eagerly: a liquid bolt of pure want zipping along my spine and settling between my thighs and my face went hot. "S-Sumire—"

"I don't like being denied what is rightfully mine," the girl said, her tone conversational even though she was yanking my panties down around my knees. When I whimpered, she pressed a kiss to my shoulder, the hand resting on my hip pulling me back so that the curve of my bottom was flush with her pelvis. She growled—a threatening, possessive note—and I shivered anticipatorily. "Submit."

I hadn't been sure what exactly she had been asking me, but the slender digits petting soft teal curls damp with excited seemed to know just what my body wanted, because she started drawing tight little circles around my clit with her index finger.

I bucked, gasping again, and Sumire leaned in, her lips brushing against the shell of my ear as she—no, Berserker—purred, "I will break you."

I cried out—I couldn't help it—as white hot pleasure licked along my neurons, reducing my body to tensed, quivering muscles and a wetness resulting from arousal like nothing I had ever experienced. It was as though Berserker knew every sensitive spot that made my body shudder and writhe in a lewd dance at the tips of her oh-so talented fingers.

'So good…!'

A twist just so combined with a particularly deep thrust had my eyes rolling back in my head and I gasped, spine arching sharply, hips bucking frantically to match the mind-blowing pace slim digits took on.

"Sumire!"

She chuckled, her teeth flashing in the dim light of the lamp on the bedside table, and pressed a kiss against the inside of my thigh. "That's not my name."

Part of me felt guilty—as though I was cheating on the owner of their shared body. They weren't quite the same person, despite wearing the same face, therefore the girl that I had come to know and, dare I say, like, wasn't the one rocking my world.

Part of me didn't give a damn. The lovely face between my legs was a familiar one—one that sent warmth zipping along my spine to pool between my thighs and make it easier for the red-head to plumb my depths.

And, as my feminine walls clamped down greedily around her questing digits, the girl licked her lips, the slow, sensual motion making me throb eagerly.

Suddenly, I needed that warm, wet muscle against my sex.

"Su—Berserker."

"Mm?"

She pressed another kiss against the pale skin of my thigh—the start of a trail of hot, wet kisses that lead towards my quivering epicenter—and I whimpered, parting them and exposing myself to her burning gaze.

"Ah…!"

"Submit to me, Virus hunter."

'Never.' The defiance must have showed on my face because she smirked, her pace quickening; speeding me to the edge of the pleasurable abyss that yawned before me. Just before I could succumb to the blissful, mind-blowing ecstasy that surged like a tidal wave within, Berserker's fingers stilled and I released a frustrated sound.

"Sub…" I moaned throatily, back arching as she shoved slim digits in as far as they could go. "…mit."

Once again, she started up a mind-blowing pace that had my inner muscles clenching and my eye rolling back in my head—once again, my glorious fall over the edge and into pure, white hot ecstasy was thwarted by the shift to teasingly shallow thrusts.

I've never hated that smugly smiling face more.

A string of profanities left me—frustrated, vicious words that I would under no circumstance say to anyone unless under the absolute worst of conditions—and red-green eyes blinked. Then, she laughed—a throaty, mirthful sound—and threw her head back, her shoulders shaking. Another glance in my direction started a fresh wave of laughter and I scowled.

"I'm afraid I missed the punchline."

"You're so cute." Okay… That caught me off guard. And, while I was blinking stupidly, the red-headed temptress pushed my thighs apart and skimmed her fingers from my knees to my inner thigh, effectively erasing any thoughts from my head except those involving her fingers and my throbbing cunt. "Very well. I will not break you just yet."

Before I could ask what she meant by that, the girl leaned in, her hot breath gusting over hypersensitive flesh, and I squirmed, tears of frustration stinging my eye. "Berserker… Please."

It was the closest I would come to submitting and I think the other girl realized that because she grinned widely, the chaotic maelstrom of energy in now-red eyes coalescing into fiery want.

At the first touch of damp heat against my lower lips, I whimpered and bucked, threading my fingers through silky auburn tresses in silent encouragement. To my complete surprise, she actually heeded my unspoken request, her tongue lapping a path upwards to my clit, where it drew tight little circles that, combined with the return of long, skilled digits to my feminine channel, ripped a scream from my throat.

My orgasm was both sudden and intense, a white wave of all-consuming pleasure wiping my mind clean and reducing my quivering muscles to jelly, and I just barely registered the trail of hot, wet kisses that was travelling up along my torso. I could taste myself on her lips when she finally made it to my mouth and the realization made me shiver, a little thrill zipping along my spine as my clit throbbed empathetically.

"How was she?"

I flushed. "S-Sumire?"

Why did I feel so guilty? It wasn't as though I had slept with another girl. Berserker and Sumire were one and the same… Right?

"My turn."

I gasped, lips parting to request just a moment to catch my breath, but the wicked light in pure green eyes stole my breath away for what felt like the hundredth time that night and I looped my arms around her neck, pulling her in and sealing out lips together.

…

"I am content." Berserker was back.

"Mm…" My heart was still racing, my chest heaving as I tried to calm my whirling thoughts. I hadn't been this satisfied in a long time.

"She's happy. You make her happy."

"Mm…" 'Me, too.'

"How about you cut the loner act?" she asked, not unkindly. Her gaze softened, the sweet, gentle Sumire I knew emerging from the frenzied aggressiveness of Berserker. I wasn't sure which personality I preferred more. "I'm here, you know. I'm not going anywhere."

A lump rose in my throat and I hated myself for it. "I know."

There was no one else in the world that made me feel like this—so totally and utterly out of touch with the mask of calm I had spent years perfecting.

"Lucia?"

"Mm?"

She kissed me softly and my heart skipped a beat. "Don't lock me out any more."

"…"

There was no one else in the world that could see into my heart and soul and make me feel like something new and beautiful despite the blood that stained my hands.

"Promise?"

There was no one else in the world I trusted… and feared more.

Meeting Sumire had been a blessing: I was finally changing, seeing the world for more than a collection of monsters and monstrous men from which I could make a profit. The beauty that had once been hided from my jaded eye had been revealed by the naïve red-head with the heart of gold and I'd never be able to truly express my gratefulness to her even if I spent my whole life dedicated to her. But I could try.

It was a total paradigm shift and it started with—

"I promise."

-End-