Chapter 1

This is a different world where only women can wield powerful magic—a world of female supremacy and male subjugation.

In such a world, I, Yuuto, somehow harbored boundless magical power within me, and because of it, I caught the attention of SSS-Rank genius female mage Silvia Arclight.

From now on, as her exclusive “mana supply source,” I would spend my days offering up my mana (and chastity) alongside passionate kisses each night.

“Wait! This isn’t a joke—”

My anguished cry dissolved uselessly into the dusty air of the alleyway.

Before me stood a woman with beautiful silver hair cascading to her waist, regarding me with sharp yet captivating crimson eyes.

Silvia Arclight.

One of the handful of SSS-Rank mages on the continent, her magic was rumored to be nothing short of calamity-class—a true genius.

Her high-exposure yet refined mage robe emphasized her exceptional figure relentlessly. Particularly, the deeply exposed neckline left one unsure where to look.

For some reason, she had apparently noticed my unique magical power.

“How intriguing. I’ve never seen a man with such dense mana before.”

Silvia grasped my chin and leaned in, examining me as though appraising goods.

My heart raced at the cool touch of her fingertips and the sweet scent of her perfume.

(Too close, too close, too close!)

“From today on, you are my exclusive ‘mana supply source.’ Consider yourself honored.”

“Mana supply source…? Don’t be ridiculous! Who would ever agree to—”

The words died in my throat.

The moment Silvia flicked her finger lightly, my body became immobilized as though bound by invisible chains.

“Tch…! So this is magic…!”

“I’d heard there were men with some magical ability, but clearly that’s all you amount to. Did you actually think you could resist me?”

Her condescending gaze fueled the sting of humiliation.

In this world, men were inherently weaker than women. It was an absolute law.

No matter how much I struggled, I was nothing more than an infant before this female mage.

“Now then, sign the contract. It’s an honorable agreement—that you become my ‘property.'”

Silvia thrust a parchment at me, retrieved from seemingly nowhere.

It was filled with terms scarcely different from a slave contract.

Despair and shame welled up from deep in my chest.

Yet simultaneously, I became aware of something else sprouting within me—a faint curiosity about this situation.

What did this woman want from my mana?

In the depths of Silvia’s crimson eyes, I thought I glimpsed something like a powerful yearning.

In the end, I was forced to sign the contract.

I’d had no power to resist from the start.

The moment the contract was finalized, Silvia unceremoniously dragged me to her private quarters.

The room seemed to be a chamber in the Mage’s Guild—lavish, yet somehow devoid of any signs of habitation. Just a sprawling, empty space.

And then came the moment of the first “mana supply.”

“Well then, let’s begin. I’ll be taking your mana.”

Silvia said this as she leaned her face close to mine.

(W-wait, hold on—)

“The most efficient means of transferring mana is through direct contact. In other words…like this.”

A soft sensation pressed against my lips.

It took several seconds to realize those were Silvia’s lips.

My first kiss.

And it was being stolen like this.

My mind went completely blank with confusion and shame.

Silvia’s tongue invaded my mouth.

Even if I’d wanted to resist, my body still wasn’t fully under my control.

In that moment, I felt vast amounts of mana flowing from my body and being drawn into hers.

It was as though a dam had burst.

“Mm…! Ahhh…”

After a while, as our lips parted, Silvia’s face was flushed and she wore an expression of bliss.

At that captivating sight, my heart betrayed me with an unwanted flutter.

“My, this is beyond my expectations. Wonderful, Yuuto.”

At hearing my name, my shoulders jumped.

(Is my mana really that impressive?)

From the elation in her voice, I could tell she wasn’t flattering me.

After the first mana transfer, my living situation was decided.

“You will live in this room from now on. I’m also commanding you to handle my personal needs.”

“What?! Live-in and play servant?!”

“It’s only natural that my mana supply source remain by my side, is it not? And don’t forget our nightly transfers.”

Silvia laughed mischievously and forced another kiss upon me.

This time it was slightly gentler than before, but no less demanding.

I had feelings of resistance. I had feelings of resignation.

And above all, an overwhelming sense of anxiety about what lay ahead dominated my chest.

Several mysterious items were scattered about Silvia’s private quarters, catching my eye.

What on earth were those?

As I pondered this, Silvia whispered into my ear.

“Now then, Yuuto. Time for tonight’s ‘request.’ I’m going to need plenty of supply from you.”

At that seductive voice, I felt a chill run down my spine.

And thus, my tumultuous life as a mana supply source began.

Chapter 2

The first night in Silvia’s quarters passed amid tension, humiliation, and faint excitement.

The bed was, of course, only one. Naturally, Silvia dragged me onto it without hesitation, and as she drew me close with passionate kisses, she drew up my mana.

Starting the next day, I began a routine of menial labor in the Mage’s Guild and miscellaneous tasks under the guise of being Silvia’s exclusive support staff.

“More, Yuuto. Supply it more efficiently.”

Last night, Silvia had commanded me thus, demanding even deeper, more intimate kisses.

Clad in a silk negligée, she was a far cry from the imposing woman of the daytime—somehow defenseless and provocative.

Even had I wished to resist, bound by the contract, I was powerless.

The softness of her skin, her sweet fragrance, the warmth of her breath flowing into me as I kissed her—all of it shook my very reason, and I felt as though something beyond mere mana was being drawn from me.

By dawn, I was utterly depleted, while Silvia wore a satisfied expression and her skin seemed somehow more radiant than before.

(Is she…using my mana to stay young…?)

Even such a question surfaced.

And strangely, despite having had so much mana drawn from me, by morning my magical reserves had nearly completely recovered.

Silvia seemed aware of this abnormal recovery rate as well, though she made no particular comment about it.

My first task at the Guild proved more isolating than I’d imagined.

This was a world of female supremacy and male subjugation. There were male staff members, certainly, but most were relegated to physical labor or grunt work.

The gazes directed at me as I wandered the Guild as Silvia’s “property” were split evenly between curiosity and contempt.

The cold stares from the female staff, in particular, were difficult to bear.

“Oh, if it isn’t Silvia-sama’s little luggage carrier. You’re certainly dedicated, aren’t you?”

Pointed sarcasm like that was routine.

(Damn it…someday I’ll show them…)

Among them, there was one woman who treated me with kindness.

Lunaria Crescent, the Mage’s Guild’s healing mage.

With rippling golden hair tied in a side tail and gentle emerald eyes, she wore a pure white mage’s robe that accentuated her ample bosom. The somewhat short skirt hem was a bit distracting, admittedly.

She was an A-Rank healing mage, and her potion-crafting skills were apparently first-rate.

“Yuuto-san, was it? Being Silvia-sama’s assistant must be quite taxing. Should you ever find yourself in trouble, please don’t hesitate to come to me.”

At her angelic smile, I felt a small measure of solace.

(So there are decent people in this Guild…)

But I didn’t miss the momentary gleam of rivalry that lit her eyes when she spoke Silvia’s name.

Silvia and Lunaria were apparently childhood friends with a rivalry between them.

One afternoon, Silvia accepted a request to slay a dangerously powerful monster.

“Yuuto, you’re coming too. I’ll have you serve as a mana tank.”

“But I can’t fight…”

“Keep quiet and stay behind me. You’re a backup battery for when I need it.”

Without argument, I was incorporated into the subjugation party.

Deep within the forest, we encountered a colossal Minotaur.

Silvia unleashed devastating attack spells in rapid succession, overwhelming the beast.

She truly was a goddess of the battlefield.

(This is incredible…so this is SSS-Rank magic…!)

But the Minotaur made its final stand.

A desperate blow descended on Silvia, which she evaded by a hair’s breadth—but lost her footing in the process.

Moreover, from the strain of casting spells in succession, exhaustion began to show on her face.

“Damn it…my mana…!”

Seeing Silvia’s movements grow sluggish, the Minotaur charged to deliver the finishing blow.

(This is bad!)

I found myself lunging forward without thought.

Or rather, I lacked the courage to truly lunge; instead, I simply grabbed Silvia’s hand and pressed my lips to hers.

There was no time for hesitation.

My mana flowed into her.

Silvia’s expression showed surprise for a moment, but she quickly grasped the situation.

Her crimson eyes blazed anew with power, and a lance of flame wreathed in immense magical force pierced through the Minotaur.

The beast crashed to the ground with a deafening roar.

“…You saved me, Yuuto.”

After the battle, Silvia thanked me curtly, though with unmistakable sincerity.

It felt like a small step—the distance between us had narrowed just a little.

And it was the moment my mana proved itself useful for more than mere exploitation.

“Yuuto-san, that must have been harrowing earlier. Are you injured?”

As we handled the post-battle procedures, Lunaria approached with concern in her voice.

“If you’d like, I could offer you ‘special treatment’ in my healing chamber? It would improve your mana circulation wonderfully.”

At her gentle invitation, I felt something different from what Silvia evoked—something calm and peaceful.