The Doctor's Eternal Oath
"Uh... wait a sec."
"Wait a sec?"
"Did we ever even talk about that?"
Shin Roa stared at me with utter disbelief in her eyes.
"That's weird, Sunwoo. Maybe you should get a check-up. You look fine on the outside, but there might be something wrong with your memory?"
But I was the one who couldn't believe it.
"Our deal was that I'd take down that dungeon boss and bring you the loot."
"That's right."
"And what you had to do in return was come to my place and treat Han Seohee, even risking the danger."
"Correct."
Good thing my memory was just fine.
"So that's where it ends, right?"
"It should have. But after that... didn't I swear to give you everything?"
"Did that happen..."
I tilted my head for a moment, vaguely recalling something like that—or maybe not.
"Wasn't that just something you said in the heat of the moment?"
When Heea had been kidnapped, Roa had been sobbing, babbling all sorts of things.
"In the heat of the moment?"
"Honestly, you were a mess back then. Not in your right mind, voice too quiet to hear properly... and anyway, I was gonna help even without you saying it."
I like people. But I'm not the type to respect others' opinions above all else.
If I do something, it's because I want to. Not because someone swept me up into it—it's my choice.
"Don't take it too seriously."
Her eyes cooled slightly.
Oh crap, that's not good...
The angelic gaze of the white-clad healer from moments ago was gone, replaced by the icy stare I'd felt when we first met.
"Fine. Let's pretend it never happened, Sunwoo."
"Uh... yeah?"
"I never promised you anything. You just graciously saved me and my sister out of kindness and let us stay in your home."
"R... right?"
But Roa's expression didn't soften. She was the one kneeling and looking up at me, yet it felt like she had me pinned down.
"So how am I supposed to repay that kindness?"
"Hm?"
"You've given me so much."
Her eyes locked straight onto mine.
"You saved Heea when she nearly died because of my mistake. You gave me the chance to save her. You provided a safe place for her to stay and rest."
"True enough."
"Unfortunately, I have nothing to offer in return."
Roa stood up. She approached me.
"Except this body."
"But—"
"That's not all."
Roa wore a faint smile.
"Sunwoo. You gave me hope. The hope that I could save people again. Do you have any idea how valuable that is... how great a debt I owe you?"
I shook my head firmly.
"No clue. How could I?"
We'd talked before, sure, but I didn't know her past inside out. We weren't that close.
"Ah... I see."
"Obviously."
I wasn't unsympathetic, but I wouldn't pretend to understand what I didn't.
I could guess her situation was complicated, but not how much it meant to her.
"Still, I don't think I did anything that amazing. At least, not regarding your character."
"..."
"You were always that kind of person."
Roa gently pushed me down. Her lips brushed my nape.
"Thank you. I lost control there. Not uncomfortable, are you? If I'm too heavy or there's any issue with your body, tell me now."
"There... is a change."
Her breasts pressed against my stomach. Her lips touched my neck.
No medical knowledge needed to predict the blood rushing to a certain spot.
"Back to what I was saying. I'm not some foolish woman who racks up debts to a man and shrugs it off."
"Debts? Because of revenge? Honestly, aren't you overreacting a bit? You didn't even seem scared of me—"
"I had a base back then."
"Ah."
"Now... if you decided to kill me, I couldn't resist. I couldn't even protect my sister."
Her hand slipped under my shirt, softly caressing my stomach and chest. Her fingers were slender and gentle, but their movements were precise, disciplined.
Not random wandering—they moved with perfect calculation and control.
"Disappointing? Me, who casually despised you when I had the upper hand... now broken and begging for your mercy."
"Nah, not really."
"Oh, what a shame. I thought trampling a woman like that would satisfy your lust for power... give me some use."
Casually, I grabbed her ass where she lay atop me.
"Ever thought of joining another group?"
"I'm not that foolish. I did wonder if you'd let me go..."
Roa whispered in my ear as she lay there.
"But to do what I truly want—to save others—staying by your side is the smartest choice."
"An honor."
"And finally..."
For a moment, Roa's eyes softened.
"Someday, Heea will end up in your arms too, right?"
"Huh?"
"When that time comes, I don't want her thinking she owes you a debt. I want it to be pure love—Heea becoming your woman because she loves you."
"Wait—"
"The debt our sisters owe you... I want to repay it all with my body and rights."
Roa's eyes glazed with ecstasy, as if imagining that moment.
"Even if I saved Heea, that doesn't mean she has to become my woman."
She's a person. Not my trophy.
It'd be a lie to say saving women had zero sexual motive, but it wasn't the main reason.
"So Heea has to live alone forever?"
"No, she could meet someone good—"
Roa pouted.
"Sunwoo, did you know?"
"What?"
"You're usually fine, but sometimes you show this insanely foolish side. And it's so illogical and creative—"
"What? What'd I do wrong now!"
"Heea meeting some other guy?"
"Ah."
People are rare enough in this world. Men even more so.
With males barely in huge organizations, living in my apartment made such meetings impossible.
Even I, who thought I kept things proper, kept having women roll in. The odds of Heea finding a man who "truly loves her" were zilch.
"Fine, I was foolish."
"Quick to admit—good. Anyway... time to do what must be done."
Shin Roa has requested to become your sex slave. Will you accept?
"..."
I'd seen this window a few times, but it never got familiar.
The moment I hit accept, Shin Roa would be bound to submit to me.
"Back then... long ago, I even thought I'd sell my soul to the devil to save Heea. If it meant she could be healed, I'd do anything."
"..."
"You're strong. In body and heart. Leaning on someone like that... it's not too greedy, right?"
I let out a hollow chuckle and tapped accept.
Shin Roa's status window popped up. I flicked it aside casually and looked at her face.
"This... it's like a collar. I can feel the change. The compulsion to obey you, the rising lust."
"Not too hard?"
"More like... an overwhelming urge to be used by you."
Without hesitation, she stripped and sat in the chair by my room's computer.
"Now that I'm a slave, it's time to prove my worth as one. Of course, if you want, I'll serve everyone in your group with utmost sincerity..."
Roa crossed her legs sexily, her gaze arrogant.
If not for the missing white coat and black stockings, it felt like I was back at that hospital.
"If needed, I'll use this body freely to make you happy."
But her voice carried affection, gratitude, and desire for me.
"So, what do you want to do... Sunwoo?"
The graceful curve of those snow-white legs captured my gaze.