The Daughter's Sin is the Mother's Sin (7)
I was about to grab a brush pen and write the two 正 正 characters—our contract terms—directly onto Yujeong's naked body, but I stopped. Leaving her standing there completely nude, embarrassed and at a loss, I circled around her once, centering on her body.
Arms crossed like I was appraising an ancient Greek statue, one hand under my chin, I began evaluating her entire form.
Yujeong's naked body was sculpted in the shape of a fertility goddess, so perfectly proportioned it never got boring no matter how long I looked.
"Wh-what are you doing? I stripped like you said! Hurry up and write the characters or touch me or whatever—do what you want!"
"Quiet."
I fell into thought. Originally, like with Yujin, I'd planned to shower Yujeong with mockery and insults to shatter her lofty pride. But now...
"Don't button that dress shirt. I'm looking."
I shot a glare at Yujeong, who was furtively folding her shirt while watching my reaction. She tossed it irritably to the floor as if to say, Fine, whatever? fully exposing her naked body before me.
I considered smacking the back of her head for her insolence but held back. I abandoned the idea of breaking her pride with abuse and curses too. There was no need.
Yujeong bit her lower lip with her canines, head bowed. She trembled every time my gaze touched her. Her pride was already in the dirt without me lifting a finger.
"You've seen enough by now! A body like this from some old... hag like me, just like you said!"
What to do? If I agreed and tore her down here, I could hand her something even more humiliating than what I'd given Yujin. And incomparably easier. Crush that high nose with shame and degradation, slowly erode her mind until she couldn't even dream of defying me? Sounded like a solid option. But...
"C-Compared to our daughter, it's nothing special, right? With these huge tits and ass..."
Without me prompting, Yujeong started self-criticizing, but midway she looked suddenly forlorn. Forgetting I was watching, she grabbed her belly fat and made a choked face.
"...Maybe I should quit drinking."
She muttered so softly she probably thought I wouldn't hear, then suddenly lifted her head with renewed vigor and yelled at me.
"But backing out of the deal now is impossible! You know that, right?"
Bluff. I hadn't hit or mocked her, yet after beating herself up, she was on the verge of tears. I could tell without even looking at her face.
Hmm, what to do. A bit more neglect might do the trick. It was pretty entertaining anyway.
I sat in the chair and cracked open one of the energy drinks she'd bought, chugging it down. Caffeine hit my system, easing the fatigue and sharpening my mind.
It was just temporary, of course. Tomorrow I'd crash harder from the borrowed energy. But right now, I needed it.
I downed the first can in one go and started on the second while eyeing Yujeong.
Her bravado from boldly stripping didn't last. Now she squeezed her thighs together to hide her pussy and lifted an arm to cover her breasts. Her slim arm was no match for those massive tits, of course. Even a heavyweight bodybuilder with huge arms would struggle. Her proportions were so unreal—how was that tiny waist supporting them?
Twisting to cover herself, Yujeong suddenly reached sideways and hit the motel light switch.
Pop!
The brightly lit room plunged into darkness. But only briefly. As my eyes adjusted, her curvaceous silhouette reemerged, curves sharp even in shadow.
"Turn the light on, auntie... sis."
"Don't like 'auntie'?"
"Turn it on quick. Don't piss me off."
"What if you do get pissed?"
"...".
I finished the second can, glaring at her in the dark. Not a kid anymore—why act like this? Childish backtalk from the school chairwoman, regressing to elementary school level.
While I was speechless, Yujeong bent at the waist to snag the rolling energy drink by her feet. Her ass—bigger than her tits—jutted out like a low hill, stealing my gaze.
Straightening up, she threw her head back like me and chugged it down.
She must've thought the dark hid her, but with the bedside lamp on, her breasts jiggled visibly with every gulp.
Her foolishness didn't stop there. Ignoring the carbonation, she chugged like me and suddenly choked—"Gah!"—staggering before collapsing to the floor.
"G-gah... ack..."
I looked down pitifully at her kneeling naked before me, hands on the floor.
Is this really her?
The same bitch who'd nitpick me for nothing and drag me to the chairwoman's office after school for endless lectures?
The one who'd hammer her laptop in a suit, not even glancing my way while softly spewing abuse—how could that be the same woman now sprawled naked before me?
But this undeniable reality dredged up pre-regression memories, igniting untimely rage. Part of me wanted to charge, soccer-kick those hefty tits like a ball, then punch her screaming face until my fists were bloody and hers despair-soaked.
But after a brief internal debate, what came out was the opposite.
"Don't talk like that, sis. It's a pretty body."
My voice sounded weird even to me—soft and sweet, like a melodrama's perfect younger guy. Maybe not that extreme, but nothing like a rapist who'd blackmailed a mom with her daughter sucking his dick into an unmanned motel.
"Wh-what? Wha?"
Yujeong spat out the leftover drink like a messy kid and blankly asked back.
Her dumb face made me want to smack her again. But my inner thoughts didn't matter. I'd started this play—might as well keep praising the hag whose self-esteem was already rock bottom, as a female.
I eyed the energy drink dribbling into her cleavage, grabbed tissues from the nightstand, and approached.
Until now, strong maternal instincts and the shame of full nudity had blinded her to it.
Being alone in a sealed motel room, naked, with a thug.
Scream for help? Unmanned motel—no one coming. Even if someone heard, they'd assume kinky play and ignore. Realizing this, her face paled.
As my hand neared, terror-stricken Yujeong said,
"D-don't hit me."
Not the chairwoman's voice—childlike, regressed.
Did her dead ex-husband beat her? Why so skittish?
Rage surged to make her fears real, but I held back again. Can't act on impulse like an idiot. To flip Yujeong—her daughter's most trusted ally—and make Yujin taste ultimate betrayal from her closest, I had to endure now.
I wiped her lips with tissue. Then the spill trailing down her neck and cleavage.
After showing only violent thug vibes, my sudden warm gaze and gentle touch froze her in confusion.
Then her eyes shifted oddly—teacher, mother, female bizarrely mixed.
The deep female urge to tame a violent beast with her femininity, turn a wild animal loyal only to her. Yujeong, who'd forced celibacy on her daughter, seemed oblivious to it, but females are females. Especially repressed ones—their instincts run stronger.
I finished wiping her breasts and continued,
"Pretty body—why keep saying it's fat?"
"Pretty...? My body...?"
Her dazed reaction, like she'd never heard male praise despite that figure, left me stunned.
Why keep acting like this, auntie?
With that face and slutty body, she must've fended off endless guys. Shouldn't she be arrogant like Yujin?
Mystery, but good for me. Shower the clueless bitch with flattery to boost her favor.
I grabbed her arm like an embrace, pulling her up.
"I can stand myself!"
She wobbled upright, then shoved my chest pretending toughness.
Why? Then she said,
"You seduced our daughter with dirty tricks like this, huh?"
Mother-Yujeong still overpowered female-Yujeong. She smirked confidently, like she'd seen through my schemes, and turned away with a hmph!
"Sis..."
I considered going lower, but no—I wanted her favor, not host-club gigolo.
"Go wash up."
"W-wash?"
"You planning to do it like that?"
I glanced at the energy drink pooled on her slight belly pudge I hadn't wiped.
"Right, that's it? Hate the sweat smell from an auntie body? Yeah, I get it—not young and fresh like our daughter, so to a kid like you I look like some old hag..."
I hadn't even mentioned smell. She grumbled on, then pointed at the brush pen on the bed.
"The contract? You said you'd write it on my body."
"Washes off anyway."
She nodded, realizing it made sense, but annoyed at our minds aligning, shoved me again with another hmph!
Then, despite already showing everything, she feigned sudden shame and fumbled for her discarded shirt. But while she dressed, I'd stealthily kicked her skirt and panties under the bed in the dark. No luck finding them.
She glared briefly but figured crawling ass-up would be worse, so sweat-soaked shirt translucent, she shuffled her huge ass to the bathroom.

Dumb bitch. Who said I'd let her wash easy?