It was only after entering the labyrinth of memories that Eira realised something he hadn’t known.
‘Yanu wasn’t the only one who was sexually frustrated, was he.’
For days on end, the two of them enjoyed their quiet, isolated world to the point of exhaustion. They visited a police station cell, received parcels at a family home, played around in an outdoor pool—something impossible in cold Solar—rolled around in a hotel suite, played billionaire and bodyguard, teacher and student, and more. And then…
“I’m only doing this because you want it… But do you really like this sort of thing, Yanu?”
Eira sighed, hesitating, and asked Yanu.
“Isn’t it you who loves it to death?”
Yanu frowned slightly as he spoke—because Eira had suddenly jabbed a needle into the crook of his arm. As the clear fluid pushed in, Eira’s cheeks flushed with colour. His grey-blue eyes shimmered.
“Haah, I’m so nervous…”
“…It’s just saline. Why are you so excited?”
Yanu asked, feeling the mildest pain he had ever experienced in his life spread through the crook of his arm. As a dragon, there were many times—no, frequent times—when he simply could not understand his mate. Eira’s behaviour and words often defied the customs and logic of ordinary humans Yanu had studied.
“Silence, please, patient. You’re breaking the immersion.”
Eira, dressed in a white doctor’s coat, scolded him. After injecting a 0.5% saline solution, he pulled back the piston. Then, with a look of fascination, he watched bright red blood being drawn into the transparent syringe. When he released the magic that had been keeping it from evaporating, the dragon’s blood slowly turned clear and disappeared. As Eira looked regretful, Yanu gave him a sly grin.
“Doctor, wanna slice open my belly? Aren’t you curious what’s inside?”
“How could I do something like that to my lover?”
Eira turned his head with a snap, but Yanu coaxed him softly.
“Why not? You’d enjoy it, and so would I. I like pain, after all.”
Watching the drop of blood completely vanish, Eira glanced down at Yanu and smiled faintly. Setting the syringe down quietly, Eira approached him. As he leaned closer, the silver rims of his glasses gleamed. His expression turned serious as he tightened the medical strap securing Yanu’s right arm to the bed.
“Don’t say such nonsense.”
“I know you were disappointed the x-ray solution didn’t work on me. I’ll close my eyes, so if you slice me open quietly, I’ll pretend not to notice. There’s no one else here.”
Don’t you want to know how my organs are structured when I’m in human form? Yanu tempted him. Eira narrowed his eyes and harshly tightened the strap on Yanu’s left arm too.
“If that’s what you want so badly, go hunt a dragon. I’d like to try it on one of them.”
Yanu didn’t respond—just grinned. But his forearm veins twitched as if he was actually annoyed. Strangely, Yanu rarely showed jealousy toward humans, but when it came to magical beasts, it was a different story. Even the slime Eira brought in for experiments, Yanu constantly looked for a chance to kill. Lately, he’d even started eyeing Eira’s collection of monster eyeballs with visible distaste.
“If you’re going to give them to me anyway, should I let you extract my eyes yourself?”
Eira pinched the mouth of the cheeky dragon tightly. In response, a red tongue slid out between his lips and slyly licked the finger. Eira pushed his index finger into Yanu’s mouth and firmly jabbed the root of his tongue.
“Be quiet before I gag you, patient.”
As Eira pulled his hand out, Yanu bit his finger hard with a crunch. Eira slowly looked over the Yanu tied up on the bed. Knowing someone who could snap those straps at any moment was quietly staying bound—it was strangely satisfying.
“The diagnosis is… excessive sexual desire,”
Eira said in a mock-serious tone, holding a chart. The patient gown Yanu wore, prepared in advance, clearly reflected Eira’s own preferences. It was a short tunic-style robe that revealed thick, horse-like thighs. Eira gently stroked one of those muscles, twitching beneath his touch, and asked,
“Do you often feel discomfort from this condition?”
“Very often.”
Yanu replied, staring straight at Eira. As the pale hand lifted the gown and reached between his legs, the red hue of his eyes deepened. Despite days of fooling around, Yanu showed no signs of fatigue or boredom.
“Then I’ll have to treat you.”
Saying so, Eira boldly grabbed his member. Even with only a few strokes, it swelled up rapidly and filled his hand tightly. As he teasingly stroked it from base to tip, the restraints around Yanu’s limbs creaked. Eira frowned slightly and tightened his grip.
“Patient, if you want treatment, stay still.”
He squeezed hard—so much that a normal human would’ve screamed—but Yanu’s cock only grew larger. Eira was starting to worry about consequences, but he didn’t want to waste this rare chance to have Yanu bound and at his mercy.
“Mm.”
Lifting the gown over his abdomen, Eira licked his lips. A dragon’s beauty wasn’t limited to his face—their genitalia were long and perfectly shaped. The only problem was the size…
Why would a dragon even need this level of sex drive if they don’t reproduce? Just to satisfy their mate?
As that academic curiosity passed through his mind, Eira refocused on what was in his hand. Come to think of it, he’d never really had a moment to just look at Yanu’s in such detail. He was usually too exhausted, or Yanu would lose patience and take over first.
Putting the chart aside, Eira held it with both hands and slowly stroked it. Pre-cum gradually coated the glans. He watched the slick sheen and gave it a light lick with his tongue. It twitched in his grasp. He held it tightly and gave a soft suck. Just the tip was already too much.
It definitely tastes different.
Yanu’s semen looked similar to a human’s but had no fishy taste. It was faintly sweet, as if created solely for his mate’s enjoyment. Its composition was also completely different—maybe that’s why he could control his release so freely. While thinking about that, Eira unintentionally gave it a gentle bite.
And with that, Yanu’s already paper-thin patience ran out.
Crack! The thick, durable strap tore apart in one go. Before he could react, Eira found himself underneath Yanu. Yanu had pulled down his trousers to his thighs and, pressing Eira’s knee down with his still-bound forearm, impatiently thrust in.
“Ah!”
The glans Eira had been tasting moments ago pushed deep inside him in an instant. Thanks to days of endless fooling around, the sudden penetration was a bit overwhelming—but not painful. Still, the pressure didn’t go away.
“It hasn’t even been ten minutes—hngh…!”
“I don’t want to wait anymore. If I can’t see blood, then I’ll take something else.”
“Why do you like biting there so much—ah! Aah!”
The overly aroused dragon said that as he thrust in with his wildly swollen cock. Eira, aroused himself—though not as much as Yanu—moaned and clung to him. No matter how he thought about it, it wasn’t him who liked pain. It was Yanu.
Thanks to their perfectly matching preferences, the two ended up spending two more days in the hospital. After that, they roleplayed everything from florist and customer to disobedient idol and agency CEO, master and fierce pet… they thoroughly wrung every drop out of the labyrinth of memories. Just when Eira felt like he might literally die of exhaustion, he finally managed to push Yanu off.
And then he frowned with suspicion.
“Wait… this wasn’t a ‘Sex-or-can’t-leave’ room?”
“What’s a ‘Sex-or-can’t-leave’ room?”
Yanu asked, tearing off the choker around his neck. Eira pointed at the giant letters still floating above the city.
“That. ‘A room you can’t leave unless you ○○’. I thought it meant sex… but after everything we’ve done, I don’t think that’s it.”
Yanu, after spending so long with Eira, at least understood what the word sex meant. As Eira conjured a coffee with a flick of his finger and crunched the ice violently, Yanu replied curiously,
“Why would it necessarily have to be sex?”
Well… because in his past life, that was the most famous condition in rooms like this? They’d done it in every position and place possible over the past few days, so it clearly wasn’t sex.
Then what was it?
Now, it really was time to leave the labyrinth of memories. As Eira stared hard at the sign—“A room you can’t leave unless you ○○”—and thought,
“I wouldn’t mind just living here, though,” Yanu said.


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