Shall We Take Off the Pants and Panties Too?
Time passed, and by Saturday afternoon, I found myself getting ready to head to Ye-eun Seo's house.
"Phew..."
Right before leaving the house, I stared into the mirror one last time, still agonizing over it.
Was this really okay? Could I really hand my body over to that pervert who'd mercilessly toyed with my breasts from the very first day we met after I turned into a girl?
I'd agonized endlessly, searching for every possible reason to turn down her offer from all angles.
But in the end, I'd decided to go through with Ye-eun's proposed lesson.
It was true that I knew next to nothing about being a woman, after all.
And ever since she'd groped my breasts, this weird, lingering sensation had stuck with me.

"Haah... Why the hell am I doing this...?"
It was this itchy, burning feeling—like something smoldering inside—that I couldn't quite put into words.
It wasn't just my breasts; when it got worse, it spread downward, stabbing at my stomach like pins and needles. It was seriously annoying.
I'd scoured the internet for answers, but all I found were perverts sharing their stories—no useful info to fix my situation.
And asking Mom something like, "A friend groped my boobs, and now they're super sensitive," was way too awkward.
In the end, to learn about this phenomenon—and how to live as a woman—I had no choice but to go see Ye-eun.
- Ding-dong
"Who is it?"
"It's me, Seo-jin Lee. You said you'd teach me about being a girl, so I came..."
- Whoosh!
"Oh my, Seo-jin. You really came? Come on in~."
"You're quick... Fine, I'll come in."
I rang the doorbell at the address Ye-eun had given me, and the door flew open almost immediately. There she was, beaming ear to ear for some reason.
Unlike her usual plain academy outfit, she was wearing flowy homewear that swayed as she moved, greeting me with a made-up face that screamed effort—less intense than outside, but still.
I shook my head as I looked at her. How could someone do full makeup even at home?
I'd skipped mine on the way to a friend's house because it was a hassle, and suddenly I felt embarrassed.
"Seo-jin came all plain today? Going for that no-makeup makeup look?"
"Uh, well... I don't really know how to do makeup anyway, and it was too much of a pain, so I just came like this."
"For real? Hmm, yeah, you're pretty even without it right now. But I bet you'd be even prettier all dolled up."
"Yeah...?"
"Yep! So come on in—your big sis is gonna teach you everything there is to know about being a girl, from A to Z~."
Ye-eun led me through the living room to what looked like her bedroom.
The room she guided me into was impeccably neat, filled with a soft, feminine scent.
A subtle diffuser fragrance, a tidy vanity, and a bed neatly made up with pink bedding—it all hit me with this intense sense of womanhood that I'd never really focused on with her before. I swallowed hard without realizing it.
"Make yourself comfy, Seo-jin. Want anything to drink? Just say the word."
"N-no, I'm good. Uh, where's Hye-won?"
"Hye-won? She texted she's running late for something."
"Oh?"
"Yeah. She said not to wait and just do what we need to. So I'll cover the basics before she gets here."
Ye-eun took my hand and pulled me onto her bed, sitting me down.
Did she not care at all that I used to be a guy? This was a space she wouldn't easily let just anyone into, but she was lending it to me without hesitation.
Even if she saw me as just a friend to hang with—not a guy—there had to be some line you don't cross with the opposite sex.
Guess Ye-eun was the type who didn't mind as long as you were physically a girl now.
Or maybe she was interested in me specifically.
Either way, I wasn't thrilled about getting personal attention from this unpredictable delinquent girl.
"...Seo-jin, you listening to me?"
"Huh? Oh, sorry... Was lost in thought."
"Knew it. Sometimes it feels like you're imagining weird stuff about me."
"What the hell? So, what'd you say?"
"Nothing much—just, what's the size of the bra you're wearing right now?"
"Bra size...?"
I glanced down at my chest.
My breasts—now incomparably huge compared to my guy days—filled my view, and my face heated up instantly.
Even though they were part of me now, I still wasn't used to them.
Naturally, I hadn't bothered measuring my bra size. Mom had just eyeballed it and bought some for me.
"Size... I don't remember. Mom got them for me, roughly."
"Ugh, figured. No wonder your boobs looked squeezed in the other day."
"Oh, yeah? So it doesn't fit?"
"Duh! Look at your shoulders—marks everywhere. The bra your mom got is definitely too small for those tits."
"Is it...?"
It did feel uncomfortable wearing it, like my breasts were being squished, and my shoulders ached.
But going without? My nipples poked through my clothes in the most embarrassing way, so no choice but to wear one.
Plus, without it, this crazy girl would spot them and pounce.
"Looks like I gotta teach you from square one."
"Yeah, well... Might as well learn."
"Okay, first—take off your shirt and bra."
"...Huh?"
What the—?
I stared at Ye-eun, wondering if I'd misheard, but her face was dead serious, like she was stating the most normal thing.
"W-what'd you say?"
"Take off your clothes~. Gotta measure your bust properly."
"N-no... What does stripping have to do with bust size?"
"You gotta feel the boobs bare to get the real size, right?"
Made sense?
Yeah, when measuring waist, you lift your shirt and measure against skin.
I froze without responding, and Ye-eun pressed on shamelessly.
"Gotta know your exact size to recommend the right bra. Right?"
"Well... yeah."
"Come on~. Better do it now so you don't suffer later."
Her voice was firm and insistent, leaving me no choice but to give in and bare myself to her.
Couldn't exactly say she just wanted to see my tits—her eyes were genuinely serious.
And hey, she wasn't a guy; we were both girls now. No real reason to hide, right?
Not that I fully trusted her after the public bathroom groping, but... I'd give her a shot.
"Phew... Never thought I'd strip in front of a friend."
"Good girl, Seo-jin. Wait here—I'll grab the measuring tape."
"Okay..."
As Ye-eun headed to the dresser for the tape, I quickly ditched my shirt and bra.
Right—this was like a clothing store. I was here for the perfect bra.
With that self-pep-talk, Ye-eun wrapping the pink tape around her finger didn't look so scary anymore.
"Ready? Let's measure."
"Yeah... If you try anything weird, you're dead..."
"Straighten your back, arms out. Underbust first."
Ye-eun circled behind me, slipping the tape under my armpits.
The cool tape touched the skin right under my breasts, and I shivered involuntarily.
"Eek?!"
"What's with that? If you make weird noises during measuring, I'll look like the perv."
"You are a perv."
"Want me to just grope 'em then?"
"F-fine. Hurry up, you bitch."
I sighed, steadied myself, and spread my arms as instructed.
In the mirror, Ye-eun looked totally focused—like a real store clerk.
She was measuring my chest matter-of-factly.
So why did it feel so off?
She pulled the tape taut, and my breasts lifted slightly.
"Hup...!"
"Hmm, underbust is 70. Your waist is so slim."
Pretending to hold the tape, she slid her index finger along the soft flesh under my breast.
Intentional or accident? That secret touch made my shoulders twitch.
This feels... weird. Something's...
I trembled, weird noises slipping out, but she ignored it and moved to my front.
"Now overbust. Gotta lift 'em so they don't compress."
"Y-yeah? So that means..."
- Squish!
"Hyat?!"
"Like this—gotta hold 'em."
Ye-eun's hands cupped my breasts directly.
Her warm body heat seeped into my bare skin, and my mind started fogging up.
Weird—first it was embarrassing and gross, but surprisingly... this felt kinda good.
She aligned the tape over my nipples, rubbing the sensitive spots with her thumbs.
"Nngh...!"
"Feels okay, Seo-jin? Tell me if you hate it~."
"N-not hating it... Hic?! This is, weird..."
"Then we're good~."
"We're not—eek!"
"Oh, Seo-jin. Stay still or the measurement'll be off—and that's on you."
"W-wait... This feels wrong... Hnng...!"
"Wrong? This is proper measuring~."
Ye-eun smirked shamelessly, not stopping the teasing.
She tugged the tape back and forth, groping my breasts like toys.
But her eyes were so serious, I convinced myself this was just for accuracy.
"Hmm, perfect. 70D should do it!"
"Yeah...?"
"Yep. Damn, these are huge~. Might even be bigger than mine."
Ye-eun muttered in awe, gave my breasts one last squeeze, then pulled away.
She whipped out her phone and called someone.
"Yeah, Hye-won? On your way, can you swing by a lingerie shop and grab a few cute sets in 70D? For Seo-jin. You have my card, right? Use that~."
She hung up and smiled warmly at me.
"All set? No more bra worries. Hye-won's pick won't hurt your shoulders."
"Th-thanks... Didn't expect gifts."
"No biggie~. Gotta help out a friend who became a girl."
"Mmm..."
Saying "friend who became a girl" so casually was a skill in itself.
A bit flustered, but her thoughtfulness eased my mind a little.
Honestly, I'd suspected she lured me here to toy with me freely.
But this seemed legit—like she really wanted to teach me.
Weird. This bitch being this nice? No way.
"Alright, time for the real lesson. Ready?"
"Yeah... So what's this lesson about?"
"Simple. You know zilch about your new body, so I'll teach you how to take care of it."
"Take care...?"
"Yep. Like this."
Ye-eun's eyes locked on me, a sly smile curling her lips.
There it was—that lecherous grin.
And her eyes looked dangerous this time.
Ominous vibes, but I shoved the feeling aside.
She seemed like she was gonna teach legit girl stuff. Judging too quick was a bad habit.
"Shall we take off the pants and panties too?"
...Nope, scratch that thought.
This crazy bitch clearly planned to toy with me with the filthiest intentions.