Cohabitation with Erti (3)
'Erti? What brings her here all of a sudden?'
I hadn't expected her to show up out of the blue in the middle of the night. And my incubus trait was already active, with the lucid dream fully unfolded.
'So, is this Erti a creation of my dream?'
I couldn't be sure. This was my first time trying a lucid dream, and the first time someone had entered it.
So I forcibly circulated the mana that barely existed in my current body.
I tried to heighten my control over the dream using that mana. In a lucid dream, if this Erti was a figment of my imagination, I should be able to reshape her appearance to my liking.
'Maybe I'll change her hair tie.'
I focused on her long silver hair and the blue ribbon tying its end. I pictured a yellow ribbon.
But nothing happened.
'What? So it's not a dream—it's real? That Erti?'
Even basic dream control had no effect. The odds were high that she was genuine.
Yet the "me" I perceived was clearly the dream version, the incubus. Which meant the lucid dream and the trial's reality were probably jumbled together.
I was momentarily flustered by that conclusion, but it made sense soon enough.
'This is the backspace to begin with, not reality.'
With my mana and magi out of whack too, if the backspace's dimensional layer outranked my dream control, it all fit.
I quickly closed my eyes and pretended to sleep.
The Erti watching me saw the lucid dream version of myself. Explaining that I'd used the incubus trait would be a hassle if she caught on.
More importantly, I needed to figure out why she'd come to my room.
"He's asleep."
Erti examined my sleeping form. Even with my eyes closed, it was my lucid dream, so her appearance and every action registered naturally.
"He must be exhausted. Even with baths and food stabilizing his mind, there's a limit. No ordinary human psyche could endure a hundred deaths."
She muttered to herself as she sat on the chair beside my bed.
'What the hell is she doing here?'
Then Erti just sat there quietly. Or rather, she stared fixedly at my sleeping face.
Moonlight streamed through the window of my room, reflecting off her silver hair. Her blue eyes, tinged with longing, gazed wistfully at my face.
After hesitating a bit, Erti finally gave in and gently stroked my hair.
"Atlin... Agnes... This child resembles you both so much."
It was utterly unlike the playful voice I'd heard over the past few days. This was a deep, husky tone laced with profound nostalgia.
She was probably seeing her former masters in my face.
"Human lifespans are pathetically short. Even in that brief time, you two burned yourselves more fiercely than fire and left this world. Your deeds live on immortally, but in the face of death, everything feels so fleeting."
Her fingertips lightly brushed my face—over my nose, cheeks, and lips. Her sorrowful expression softened just a fraction.
"All I can do is remember my old masters forever. And fortunately, humans leave descendants to carry on their blood. It's miraculous—something impossible for a sword like me."
She fell silent again, lost in reminiscence of her former owners. It was a poignant moment for her.
And the sight of this beauty steeped in melancholy under the moonlight was like a painting come to life.
But for me, who'd planned to practice swordplay all night in my lucid dream, it was just inconvenient.
'Nostalgia's fine and all, but it's about time she headed back to her room...'
And at that moment, Erti's head turned. Her gaze landed on my lower body.
"Oh my. Why is it bulging like that...?"
I had the blanket over me, but my tyrant had conveniently pitched a tent down there.
I panicked too, but I kept my eyes shut and maintained my composure. Erti, noticing the erection, muttered to herself.
"I see. You're a young man in your prime. It's not strange for it to happen anytime. Even Essemont's soldiers, when wars dragged on... they'd sneak off and jerk to weird things, only to get punished. Have you been backed up too?"
I had no choice but to affirm her words inwardly. Ever since possession, I hadn't gone a single day without release.
Whether it was Eirin's service, sex with the other heroines, or my own hand, I'd wrung out thick white semen daily—no need for solo sessions.
'It's been four nights since my last release.'
Plus, lewd fantasies about Erti to fuel the lucid dream.
With her—the subject herself—merely touching me, this erection wasn't odd at all.
"This could be trouble. If it stays like this, you might go into heat at any hole you see. But as Atlin's descendant... and Agnes's son, you can't abandon human dignity like that. A Reinhardt heir must never stoop so low."
True to her chatty nature, she kept talking to herself. And it irked me that she was imagining things I'd never do.
Erti fell silent again. Then, for some reason, her cheeks flushed red.
"If I leave it like this... and keep suppressing your lust, all my efforts to preserve your sanity will be for naught. I... I suppose I should help."
Erti extended her hand into the air, and soon it was enveloped in blue mana light.
***
'Magic?'
My room—the space under my lucid dream control—shifted again. Not in appearance, but in nature.
My lucid dream warped.
"Hm? This space feels off. For a moment, something resisted my magic's dominance..."
Her words revealed what happened. She'd used magic to make the space even more unreal.
In other words, Erti had turned this room into a dream state too. Since my lucid dream had claimed it first, she felt the dissonance naturally.
And soon, I understood why she'd gone to such lengths.
"Whatever. My magic works fine. So then..."
With that, Erti pulled down my blanket. She lightly stroked the raging tyrant straining in my pants.
"...This is all within a dream, so helping you release isn't shameful. You'll remember it tomorrow only as a wet dream. No problem."
In short, she'd relieve my pent-up lust—but frame it as a dream to spare her embarrassment.
'Virgins gonna virgin. No need for all that hassle.'
But it wasn't bad for me at all.
Erti looked human, but she was a sword, so it felt a tad odd emotionally. Still, no reason to refuse her offer to help me out.
Her appearance was alluring enough to fuck right then, after all.
Blushing Erti groped my cock through my pants for a good while.
"This won't do. Can you not cum from just this?"
Of course not. But Erti wasn't dumb. She steeled herself and finally tugged down my pants and underwear.
Her eyes widened at the sight of a real, live dick for the first time.
"Th-this... a human man's cock... no, my first dick ever, human or otherwise..."
She was so shocked she covered her face with both palms.
A sword that cleaved fiercer demons than my tyrant, a holy sword that casually slit my throat—now blushing like mad over a mere cock. It was absurd.
"How the hell does this even go in a pussy... What do human men and women even do...?"
The virgin holy sword panicked at the real thing. I watched her next reaction with interest.
"No. Get it together. In this trial space... I'm the only one who can help you."
Sword or not, she was a woman, it seemed.
Having lived as a virgin for ages, she must have some curiosity about men.
'Ego swords are fascinating. A sword, yet so human-like.'
Thanks to that, I could enjoy her handjob freely.
The handjob continued. Erti's strokes grew more skilled, but she hit another wall.
"This precum alone isn't enough. What now...?"
She was right. Unlike pussy juice, precum doesn't flow abundantly. It wet my glans and the base of the shaft, but barely.
As she jerked more vigorously, it dried up fast. The crusty remnants even made it uncomfortable.
With the pleasure fading, my cock quieted. Erti grew anxious at the clear change from before.
"No. At this rate, I can't help you cum. But that would mean..."
She pondered long and hard, then resolved herself.
"Fine. It's all a dream anyway. And you won't remember. I can be more aggressive..."
Erti brought her face closer to my cock. She swept her flowing silver hair behind her ear.
Then her soft lips touched my glans.