"L-Little brother! I-It's not like I want your attention or anything...♡"

A heightened voice called out, giving the impression of a cute and young maiden. As I slowly opened my eyes for the new day, I found a loli. A loli sitting on my bed, looking flustered as she fiddled her fingers nervously.

"W-Who are you?!" I cried out in shock.

"I-I'm your big sister, you fool!!"

Big sister...?

The Supreme Overlord of the Fallen is this little girl?!

Why is she so small?!

And why is she talking so timidly?!

She puffed her right cheek into a small balloon as I carefully studied my supposed demon lord big sister. While the majestic feathery wing behind her waist and the dual horns above her head still remained similar, Amae appeared like a completely different girl. To be more precise, a smaller and younger version of her old self.

Folding her arms and turning her head slightly away, her tsundere pose struck an unthinkable chord in my mind.

Maybe it was the adorable way she had her midnight-black hair loose, which flowed down from her demon horns to her petite body. Or maybe it was the adorable pajama she wore, which carelessly hung to the side and left one shoulder bare. Or maybe it was her black-stocking and short skirt, which accentuated the cuteness of her long and slender legs.

Whatever it was, I was starstruck.

My heart was pounding endlessly, wondering how I should handle this situation. It did not seem the Amae in front of me was dominant and commanding. Rather, she was being strangely shy, almost like a little sister. 

This meant I had to take the lead.

How do I go about this?

"Hmph! You don't believe me!"

Amae sounded whiny and pouty. The personality of the usually composed and confident older sister was nowhere to be seen. 

Instead, what was in front of me was a little child, begging for attention in subtle ways.

"I believe you, I believe you!" I held my hand up and placated her tense mood. "What happened to your body, big sister?"

Amae scratched her head adorably, recalling the event yesterday in small bits and pieces. Occasionally, she would even stutter her words. As the loli sister explained about some sort of potion failure, I was continuously baffled by how such a perfect little creature could exist.

The power of magic.

This is unbelievable...!

A five hundred-years-old loli!

While my older sister was perfect in every imaginable way, this petite doll deserves praises of her own. I could barely hold myself back, wanting to shower her with hugs and kisses.

Ahhh... Is this why big sister wants to pamper me all the time?

I could understand why she is always so happy when she's taking care of me...

"I-I suppose the side effect will last awhile..." Amae looked away as we met gaze for a second. "B-but I do want to say something..."

"What do you mean?"

"N-never mind! I-it's too embarrassing."

Amae twirled her fingers endlessly. She was being so damn cute, it was hard to say no or be upset. I needed to help alleviate her anxiety. Thus, I leaned forward and held her hand gently, like how Amae usually does to me when I needed the emotional support.

"You can tell me anything. I promise I won't laugh."

"Really?"

"Yes."

"Promise?"

"I promise," I extended my pinky as she crossed it. "After all, I am your vowed partner."

After a brief pause, she muttered her request under her breath. But it was so faint, I could barely make sense out of the words.

"Can you tell me what you said again? But louder this time."

"I-I want to be called little!"

I could not help but think... 

Why is my loli big sister being so damn cute?

"Okay, little sister," I smiled, trying my best to remain composed. 

Her hazel eyes instantly lit up, almost as if I just awarded her a treat.

"A-Again!"

"Little sister."

"O-one more time."

"Say please."

"P-please."

"Please who?" I teased her in a gentle tone.

"P-wease big brother," she said softly, glancing up at me with a pair of innocent puppy eyes. At this point, my mind ceased to function logically.

I want to pamper her so badly.

She's too freaking cute.

"Good girl," I patted her head as a reward.

"Yay~ ♡"

A sweet smile bloomed onto her lips. My little sister happily wiggled back and forth on the bed as I could feel my heart melting. Melting from utter cuteness.

"I-I have another favor to ask."

"What is it?" I held her hand and smiled warmly, showing Amae that she was perfectly safe with me. "You can tell me anything and I will do it."

"Umu," she nodded. "C-close your eyes first."

"Okay," I complied and waited for her next step.

What is she planning to do?

There's no way she's going to strip right...?!

Wait wait wait.

What am I thinking?

Why am I trying to lewd my big-little sister?

I felt something warm brush softly against my lips. Feeling tickled, I moved back my body in reaction.

"D-don't move!"

Are you trying to kiss me?

But you are just too shy to say it?!

A mischevious idea formed in my mind as I patiently waited for the next kiss. I could not wait. As the familiar sensation came, I leaned my head forward and pursed my lips.

"!"

I was surprised by how easily our lips matched. While her physical appearance had changed, our body still responded perfectly to each other's needs. Because what happened were kisses after kisses.

We could not stop.

The kisses felt too good.

"Nn~~ ♡"

"Mm~"

Our bodies melted together as she slowly pulled me in for another kiss, taking initiative for the first time. Gradually, Amae's lips parted and her warm tongue came searching for mine.

Once they met, our tongues greeted in a rhythmic dance of passion. 

Her mouth is so wet.

Even her tongue feels so small and cute.

"Mm!"

"Hngh!~ ♡"

"Nn~~"

"Mmmmmm..."

When we finally pulled apart after a good minute, Amae buried her head tiredly onto my neck, wafting warm breath repeatedly onto my skin. Her petite body was now sitting on top of my crouch.

"B-baka!" she suddenly cried out.

"Baka?" I tilted her head and wondered how Amae knew Japanese. While I did mention the word to her a few times in the past, I did not expect her to fully embody the role of a tsundere loli.

She's truly waifu material.

The loli demon lord looked away with embarrassment, ignoring me on purpose. Thus, I placed both of my hands on her cheeks, redirecting her eyes back to mine.

"Aren't you a naughty little sister?" I asked teasingly, indulging in her flustered expression. "Taking advantage of your big brother while his eyes are closed."

"I-it's not like you didn't enjoy it..."

"I suppose you are right."

"I-I am right!"

"Yes, you are."

She nodded approvingly to herself, liking my validations. After all, she was a little girl at heart.

"So what's next on the menu, little sister?" I asked innocently, admiring at her petite body. "I am sure you might be feeling a bit weird down there, right?"

Understanding my intention, Amae said in an adorable tone that continued our roleplay.

"B-big brother, I-I've been such a bad girl lately."

"What did you do this time?" I found myself being more assertive. 

It was refreshing to act the dominant role for the first time.

"I've been in the research laboratory yesterday, thinking about you and I couldn't stop touching myself."

My dick throbbed in my pants as I imagined the loli demon lord masturbating to me. Moaning and rubbing her pussy up and down. Begging to be fucked.

She must have felt the bulge again because her eyes widened as my dick twitched again. Her somewhat oversized pajama slid off from both of her shoulders, revealing a pair of perky small breasts.

They look absolutely beautiful...

"That's really naughty of you, little sister," I smiled as Amae grew even more flustered, puffing her cheeks slightly. But she made no attempts to cover her naked chest.

"W-what are you planning to do with me?"

"I think you need a punishment. A good spanking on your butt."

She let out the faintest whimper and looked into my eyes with hearts in her eyes. The hearts that filled her pupil meant only one thing.

She's horny.

-FULL 18+ UNCENSORED VERSION ON PATREON-

PLEDGE THE TIER - 『 Commander and Guardians 』

From your favorite wincest author,

Amae