Feeling So Good My Asshole's Pulsing
Mother, Father, I hope you're both staying healthy. As for me, I'm not doing so well.
"Slurp... Suck... Slurp slurp...."
I haven't mentioned it before, but your eldest son turned into the youngest daughter overnight. Please don't get the wrong idea. It's because of a curse. I'm researching diligently every day to break this curse and return to being your eldest son.
And.
"You're getting really good at it now."
"Suck... Slurp... Slurp...."
I'm also studying ways to please a man every day. Really, don't misunderstand. This is all because of debt. Not only did I wake up as a woman due to the curse, but I also became a debtor owing 50 billion gold. It wasn't from gambling or anything....
My mana circuits were severely damaged, nearly ending my life as a mage, but Her Highness saved me with the World Tree Elixir. Of course, it wasn't free.
"I'm about to cum."
"Pwah...!"
While sucking the princess's cock and mentally composing a letter to my parents, I stood up and lifted my skirt. A frilly maid dress with delicate lace. To pay off my 50 billion gold debt, I'd been hired as the princess's exclusive maid.
I'm not doing regular maid duties like the others—cleaning or laundry. Well, I do clean, sort of? Every morning, I clean the princess's cock with my mouth. Just like now.
Slide.
I bent at the waist and pulled down my panties.

"H-Here it is."
I bent my knees slightly and thrust my ass back. I even spread my cheeks wide to make insertion easy, dutifully exposing my pussy as instructed.
"Your pussy's already wet just from sucking my cock?"
"Just cum already...!"
"Lady Withbel really loves my cock, doesn't she?"
Squish!
"Haah...♡"
Just the insertion alone sent electric tingles of pleasure through my waist. Slap! Slap! Slap! Slap! Gripping my hips like handles, the princess thrust relentlessly.
"Haaang...! Ooh...! Ahng...!"
She stirred my slick, juice-drenched insides wildly. Her saliva-slick cock scraped against my mucous membranes. I placed a hand on my trembling knees to steady myself.
"I'm cumming."
Spurt! Spuuurt! With the warning, the princess ejaculated deep inside my pussy. My womb filled in an instant, making my lower belly feel heavy.
"What do you say when I cum inside you?"
The princess pulled out and patted my ass.
"Th-Thank you for cumming..."
I spread my pussy to show her the semen filling me up.
Day 5 of maid life. Every morning, I receive her cum this way.
[15/100]
Suck her cock until just before she cums, then take it in my pussy. It's the best way to avoid adding lines and actually reduce them. And it's working great—I've cut the curse lines from 50 down to 15.
But it's a huge threat to my human dignity. My pride as a man is chipping away too. Sure, lowering the curse progress is good, but I can't exactly be thrilled about it.
Squish!!
"Ooooh...?!"
The princess's cock plunged back in.
"Wh-Why are you putting it back in?!"
I whipped around in surprise.
"Because Lady Withbel is too sexy."
"W-We agreed no morning sessions!"
As a maid, my duties are morning and evening. Oral service in the morning. Full-body service at night. I've been living a shockingly promiscuous daily life lately.
I never dreamed I'd end up having sex every day. And as a woman, no less.
Of course, I had no right to refuse. 50 billion gold. An astronomical sum for a commoner. So I'm stuck obeying the princess's every command.
Humans really are creatures of adaptation, huh? Even this life feels somewhat routine after just five days.
"You're planning to go to the bathroom and masturbate alone again, right?"
"H-How did you...?"
Just as she said. I was indeed planning to head to the bathroom for some relief.
It's not like I'm addicted to masturbation. After taking her cum like this, my body heats up, and I have to cool it down somehow. I tried holding back once, and my head was foggy all day. Sexual urges need to be released on time. That's how my body works now. Probably another curse effect. Sigh.
"I'm really hurt. If you need help, just say so."
"I don't need this kind of help!"
"This will feel way better than those skinny fingers of yours."
"Hnnng...."
The princess rotated her hips gently, rubbing her glans against my cervix. I couldn't deny it. Her cock did feel better than my fingers. That veiny, slightly curved pillar of hers hits all the good spots relentlessly.
But asking her first? No way. I can't bring myself to beg for that.
I've begged her to use my pussy before, but that wasn't purely my will.
"See? Your asshole's twitching from how good it feels."
"D-Don't say that...!"
Squeeze. I tensed up self-consciously, clenching around her cock. My pussy tightened too, making the shape of her dick even more vivid inside me. At this rate, my insides might reshape to fit her cock perfectly.
"Really, no. You always make me cum at least ten times!"
If she does this in the morning, I can't get anything done until noon. My research is going smoothly right now. Just as expected, the magic circle had sections influencing sexual desire. I've figured out how to control them.
And ironically, it's all thanks to the World Tree Elixir from the princess. Tests show it jumped me from 4th Hierarchy straight to 6th—a double leap. Purely in terms of hierarchy, I'm now a Grand Mage.
Of course, since it wasn't a normal ascension, I can't wield their full power yet. Still, the increased mana capacity and hierarchy have broadened my perspective on magic circles and refined my mana control.
But the price is this situation. Every morning, I spread my ass for her cum, and at night, I curl up in a man's arms, moaning away. Well, the princess doesn't look like a typical man since she was originally a woman, but she's a man now anyway.
Wait. Thinking like that means I'm admitting I'm a woman too.
Ugh, whatever. Point is, I'm clinging to her every day.
"Just once, okay?"
"Th-That too would be..."
"Pardon?"
"N-Nothing. I didn't say anything."
Even with daily sex keeping my womb full of cum, 15 lines remain partly because I cum too easily—and because one masturbation session isn't enough. I'm hooked on climaxing until exhaustion, so I need at least five orgasms to satisfy this body. Otherwise, it won't settle. What a lewd hunk of meat.
Squelch, squelch, squelch.
The princess started moving her hips slowly.
"Hnnng... Haa...♡"
I rested my breasts on the shelf and stuck out my ass, staying still. Hurry up. As soon as possible. I need to get my lust under control. End this unhealthy lifestyle fast. Or I'll get addicted to woman's pleasure for real.
...Am I already addicted? No. Not yet. If I were, I'd be actively throwing myself at her. I admit this body feels good, but I'm not addicted. Wait, "not yet"? What am I saying? I'll never get addicted.
"Haaaanggg...♡"
I squirted in ecstasy, climaxing hard.
* * *
After showering and changing into a robe, I headed to the lab.
"Ugh... Uu... It sloshes around."
With every step, I felt the cum in my womb shifting. No clue why, but purification magic doesn't work. Magic follows the mage's will. Does that mean... I want to keep her cum inside?
"Am I crazy?! Crazy?! CRAZY?!"
I punched the wall repeatedly.
"Kugh! Ow!"
I hit the corner wrong. Clutching my fist, tears welled up.
"Sigh... Sigh...."
Rubbing my throbbing hand, I entered the lab.
"Alright. Let's do our best today too."
Pepping myself up, I dove into research. Lately, I've had more time to focus. Afternoons are for tutoring the princess in magic, but she's been busy, giving me extra research hours.
She's swamped since that secret library incident. She told me not to worry—she'd handled it with the Emperor—but her increased workload says otherwise.
"She won't even answer when I ask what's going on."
Come to think of it, who was that woman? The princess seemed to know her. And what did she mean by "blessed by death"? And one more thing. Gender swap? A magic that swaps genders only with both parties' consent. That's what she said about my curse.
"Aigoo... My head."
From my perspective, nothing from that day has been resolved. The princess dodges my questions.
"Hmph... I'll look into it later."
Anyway, for now.
"...Shall I try it?"
I eyed the equations on the blackboard.
Understanding Mana Circuits and Mana Flow
Using info from that forbidden book, I'd pinpointed the curse's lust-influencing part and devised a mana block for it. Today, I'd test it on myself. Risky since it's my own body, but success means escaping this lewd routine a bit.
"First...."
Let's strip!