Demon Lord: Erotic Adventure in Another World-Chapter 519: Even as a Mortal, You’re Still Mine

The room became peaceful.

Filled with soft sounds of shallow breaths and snoring, accompanied by the rustling of Serena's tails, shifted across the sheets and filled the air. Serena lay on her side, her face buried into the pillow, while tightly closing her eyes.

'He's become a true monster...'

Her body still ached, not just in pain but from the lingering pressure of being filled, touch and adored. Serena's muscles felt heavy, causing her limbs to become loose and weak, while her stomach remained warm under the curve of her tails.

"Y-you... are too fierce!" Serena hummed, slapping away Ryuji's hand that slid across her plump thigh, squeezing her meat.

Ryuji sat beside her, silently accepting her attack. His hand moved from her thigh to lightly stroking her hip, thumb tracing lazy circles against her skin. He hadn't spoken since he'd pulled out. Not a tease. Not a taunt. Just quiet presence—his body pressed to hers, still solid, still warm.

She felt small. Not because she was afraid. But because there was nothing left to hide behind.

No divinity. No power. No wings or immortality.

Just a woman—mortal now—carrying his child.

Ryuji shifted in the sheets and covered her with his body, leaning down as his forehead pressed against her back, kissing her shoulder. He silently enjoyed her scent, her heat and the faint lingering trace of sweat and sex on her body. Serena's tails twitched in response, wrapping closer around her belly, protective, instinctive.

"Don't pretend to sulk," he murmured, his voice low and calm. "You were the one who begged me not to stop."

Serena's ears flicked up. "Liar," as she shouted into the pillow. "You tricked me… and turned into a beast halfway through…"

Ryuji's eyes widened from her sudden chant, and he chuckled...

"But Serena,

I was always a beast."

Serena huffed while lifting her nose into the air, giving a slight glance back at him from the corner of her eyes. Her sleepy golden eyes showed a flicker of irritation.

"I'm mortal now, Ryuji. You can't… break me like this every time you want sex. I won't survive at this rate."

"You will."

His voice was without hesitation, while dragging his fingertips along her skin, teasing her waist as he cradled the side of her belly.

You're strong. And you're mine."

Serena swallowed. Her expression softened. His palm covered the small swell of her stomach now, firm, reverent. No heat. No lust. Just that terrifying, steady warmth that came with how Ryuji treated things he claimed.

It made her chest tighten.

"…Even if I don't have any power left?" she asked.

His thumb moved slowly, brushing her skin.

"Even more because of that," he said. "You gave it up for me. For this."

Serena blinked hard. Her eyes burned, and she hated that they did. She buried her face deeper into the pillow and exhaled slowly through her nose.

Her body was still sore. Her soul, even more so.

But for the first time in weeks, she didn't feel like she had to carry anything. Not for his sake. Not for hers.

Just this.

Just the life inside her.

And him... quiet, brutal, loyal and as terrifying in his devotion as he was in battle.

It wasn't just her body that felt different.

It was everything.

Her heartbeat. The ache in her joints. The weight of her breath when it came too fast. Being mortal wasn't like she imagined. It wasn't simply being weaker. It was feeling things she had never needed to before.

Fatigue settled in her bones like an unwanted tenant. Pain didn't vanish when ignored. And emotion… came too easily.

When she was divine, nothing could touch her unless she allowed it. Hunger didn't mean anything. Cold was just a temperature. And fear? That was something for lesser creatures. Humans. Beasts. Even lesser spirits.

Now?

She feared things she never would have considered before.

The idea of being injured. The thought of the child in her womb suffering. Even the stray possibility of Ryuji dying—something absurd before—now stabbed her thoughts like a poisoned needle.

She'd become fragile. Breakable.

And yet, she didn't regret it.

Because with that fragility came clarity. With pain came warmth. With the loss of power came… the will to protect not just with strength, but with everything she had.

'I want this child to live, she thought, pressing her hand to the curve of her belly. Even if I can't defend it with magic or divinity. Even if I have to bleed for it. I want it to live free. Proud. Like Ryuji. Like me.'

Her fingers trembled, resting over his hand now. He hadn't let go. His thumb still brushed her skin slowly, as if grounding her.

She used to care about temples, chants, and offerings. About how she was seen. Revered. Adored.

Now she only cared about whether this room was safe enough. Whether her body was warm enough. Whether she was eating enough. Whether the baby could feel her when she sang.

And Ryuji…

He hadn't changed. But she had.

Serena loved him not as a divine mate, but as a woman. As a wife. And that made her feel stronger and smaller all at once.

A single tear slipped from the corner of her eye.

Serena didn't wipe it.

Let him see it. Let him know she wasn't untouchable anymore. freewebnσvel.cѳm

She was real now.

Real—and his.

A quiet knock echoed through the chamber door, so soft it almost didn't reach them.

Ryuji's eyes narrowed.

He remained quiet, but removed his hand from Serena's hip, and grabbed a nearby dagger resting on the bedframe.

"It's me," came the voice from beyond the door—calm, steady, with that warm undertone only one woman in the palace could manage without trying.

Vinea.

Ryuji relaxed.

The doot slid open a moment later, before her tall framed silhouette stepped inside, her face illuminated by the torchlight. Vinea strode deeper into the chamber without hesitating. She closed the door using her tail, and watched the bed with a faint smile.

And then back to Asmodeus.

Vinea looked as fierce as ever—bare feet silent against the stone floor, her red-tinted skin glowing faintly in the dim light. Her tail swayed behind her like a metronome, the spear-shaped tip never still. Her horns glinted with a faint molten shimmer, heat rising gently from their curved ridges.

But it was her eyes that always stood out most. One gold. One silver. They softened now, and she smiled.

"She's asleep?" Vinea asked quietly.

Serena let out a breathy groan in response, curling slightly as if trying to disappear under her tails.

"Not quite," Ryuji muttered. "But close."

Vinea moved closer, pausing at the edge of the bed. She didn't speak for a moment and just looked down at Serena with a quiet sort of fondness.

"She's always like this, you know," she said, kneeling. "Giving everything she has for someone else. Even when she shouldn't."

Serena peeked at her with one eye. "Don't say it like I'm a martyr…"

Vinea chuckled. "Not a martyr. Just a stubborn little fox."

That earned a small, tired smile.

Vinea's gaze lingered on her for a second longer, then shifted to Ryuji.

"I came to tell you," she said, voice turning serious. "Scouts just returned. A group of western soldiers crossed into the valley pass two hours ago. They're not flying banners."

Ryuji's expression darkened, but he didn't move yet. He looked at Serena. Then back at Vinea.

"I'll go greet them when I'm dressed."

"You're not needed yet," she said. "Velvet already sent the shadow-walkers to intercept and delay. I just thought you'd want to know."

"…Thank you," Ryuji said after a pause.

Vinea nodded. But she didn't rise. Her fingers brushed gently over Serena's blanket instead, adjusting a fold near her belly.

"She told me once," Vinea added softly, "that I should speak to you plainly. That you don't like games."

Serena's eyes fluttered open fully now, curious.

"And?"

Vinea smiled at Ryuji. It wasn't a seductive smile, but it was close.

"I'm glad I listened."

Vinea stayed for only a few minutes more, her fingers occasionally brushing Serena's belly, her voice low and calm as the two exchanged a few quiet words. Ryuji didn't interrupt. He watched them from his seat beside the bed, saying nothing—his expression unreadable, his mind already half in the war room.

These were the moments he rarely had.

Peace. Stillness. Two women who loved him. A child on the way.

He noticed Vinea's desire to have a child, but didn't know how to approach her.

Now, realising it was thanks to Serena, he wanted to let Vinea show her appreciation for a little while longer.

But peace never lasted.

As Vinea stood and moved toward the door, her tail swept across the small wooden table by the wall, knocking aside a folded cloth and revealing a dark, velvet-lined space where something should have been.

She paused, eyes narrowing.

"…Wasn't the box here?" she asked.

Serena blinked slowly, brows furrowing as she shifted onto her elbow. "The one that sealed Mephisto…?"

Ryuji's head turned immediately. He stood in one fluid motion, striding to the table.

The surface was bare.

No weight. No mark. No lingering magic.

Just emptiness.

He stared for a moment longer, his pupils narrowing to slits. His fingers curled loosely, claws flexing.

Vinea didn't speak. Neither did Serena.

The room, once warm and filled with quiet breaths, felt colder now.

Like something was watching them from the dark.

And then Ryuji muttered the only thing they were all thinking.

"…Where did it go?"