Time skips....

A month later......

It was a quiet afternoon in the Jeon Mansion.

YN was lounging on the balcony just outside her room, sipping iced tea while scrolling through her phone. Her hair was braided loosely, a few strands falling over her eyes as the breeze gently swept across her skin.

That's when it rang.

Mark.

Her college friend.

The guy who still thought giving her random surprise hugs in front of Jungkook was completely normal.

YN smirked.

She picked up.

"Hello?"

"Hey YN! You vanished like a ghost!" Mark's bright voice boomed through the speaker. "College isn't the same without you!"

She chuckled. "I'm still alive, just... taking some time off."

"Yeah, I figured. Anyway, I was just going through our project notes and realized-God, you carried the whole thing. I just wanted to say thanks, really."

"Aww, that's sweet of you."

Just then, Jungkook-fresh from his training session in the yard-walked by the hallway outside her room.

His shirt clung to him, chest rising with exertion, and a towel hung from his neck. He paused when he heard her voice.

Soft. Laughing.

Feminine.

But not for him.

He stepped back and peeked inside.

There she was-smiling at her phone, toes curled playfully under the blanket.

And then he heard it.

Mark's voice.

His eyes narrowed instantly.

That guy again?

His jaw clenched. Hard.

"Who is it?" he called out casually from the doorway, already knowing the answer.

YN turned over her shoulder and smiled sweetly.

"Just Mark. From college."

Jungkook's eye twitched.

Mark's voice continued on speaker, loud and irritating now that Jungkook's blood was starting to simmer.

"Also, YN, I know this is weird but... wanna go out this weekend? Just you and me? I found this cute café downtown-"

"She's busy," Jungkook cut in sharply.

YN turned with a wide-eyed gasp.

"Excuse me?"

Jungkook walked in like he owned the room, grabbing a bottle of water off her side table and tossing the towel to the chair.

He looked at her with a completely straight face.

"She's busy this weekend."

Mark paused. "Um... who's that?"

"Her bodyguard," Jungkook said with an icy edge. "And she doesn't go out with boys who can't hold a gun."

YN nearly choked on her tea.

"Jungkook!" she hissed.

"What?" he shrugged innocently, taking a sip of water. "Just saying facts."

Mark laughed awkwardly through the phone. "Okayyy... didn't realize I had competition."

"You don't," Jungkook said before YN could answer.

Then he walked up to her, leaned over, and plucked the phone out of her hand gently but firmly.

"You'll call him later," he said lowly, hanging up and placing the phone face-down on the table.

YN's lips parted in disbelief.

"Are you seriously jealous right now?"

Jungkook scoffed, backing away.

"Jealous? Why would I be jealous?"

"You just acted like I'm your girlfriend."

"You just acted like that boy didn't

make your laugh five decibels higher."

Her mouth opened.

Then closed.

Then opened again.

And Jungkook?

He walked to the door, hands in his pockets, voice deceptively calm.

"Next time he calls... tell him your weekends are already booked."

YN blinked.

"By who?"

He didn't even look back.

But his voice dropped into a smooth, dangerously soft whisper-

"By me."

And with that, he disappeared down the hallway, leaving her sitting in stunned silence, face burning hotter than the sun overhead.

---

The sun had begun to sink, casting long golden shadows across the marble floors of the Jeon Mansion.

It had been a long few days-filled with confessions, secrets, punches, nightmares, and tears.

And somewhere in between all that...

Jungkook completely forgot.

Forgot the one detail YN made him swear to remember.

The one thing she warned him about each month with wide eyes and pointed fingers.

"Don't ignore me when I'm on my period. Or I'll make you regret it."

He didn't regret it... yet.

But he was about to.

Jungkook was sitting on the couch in the study room, dressed in-you guessed it-an all-black outfit.

Loose black joggers, black oversized hoodie, black socks.

He looked like a walking shadow.

Lost in thought, he stared at the documents in front of him until-

SLAM!

The door opened dramatically.

He didn't even flinch.

"Jungkook," came a high, slightly nasal voice-whiny and demanding.

He looked up.

And there she was.

YN.

Dressed in a baby pink oversized sweatshirt, socks mismatched, hair in the messiest bun he'd ever seen, and lips in a pout so sharp it could stab someone.

"Why are you wearing black again?" she demanded, hands on her hips.

He blinked.

"I always wear black."

"Well, don't!" she snapped. "It's depressing. You're depressing. Your hoodie is depressing."

Jungkook tilted his head. "Are you okay?"

YN narrowed her eyes. "Do I look okay?!"

He squinted.

"...You look like a marshmallow with attitude."

"Excuse me?!"

"I mean that with affection."

"Take off your hoodie."

"No."

"Then I won't eat."

"What?"

"You heard me."

"YN."

"I'm serious."

Jungkook blinked at her again, slowly realizing.

Oh.

Oh no.

He had completely forgotten.

Three days ago, YN had curled up on the bed with a heat pad and kicked him out of the room because her cramps were "throwing a concert inside her uterus."

And then chaos happened.

Secrets. Violence. Grandpa's return. Confessions.

He forgot.

And now?

He was being punished.

"YN..." he tried gently, "I'm sorry. I got distracted. I didn't mean to forget-"

"You forgot that I'm bleeding and emotional and craving your attention like a kitten on steroids!" she snapped.

Jungkook blinked slowly.

"...That's a visual."

She crossed her arms and looked away.

He sighed, got up, and walked to her. "Okay, what can I do to fix it?"

She glanced at him with narrowed eyes. "First, go change. No black. Wear... white. Or grey. Or blue.

Something soft. You look like you're going to a funeral."

"But I like black-"

"Jungkook."

He shut up.

Nodded.

And walked out to go change.

Ten minutes later

He returned.

Wearing a soft blue T-shirt, grey sweatpants, and slightly damp hair from his quick rinse.

YN stared at him from the couch, a blanket wrapped around her shoulders like a hormonal burrito.

She gave a firm nod of approval.

"Better," she mumbled.

He raised a brow. "Now can you eat something?"

"No."

"Why not?"

"Because you haven't apologized properly."

He sighed.

Walked up.

Bent down.

And kissed her forehead.

"I'm sorry for forgetting. I was stupid. Please forgive me, hormonal Queen of Chaos."

She smiled. Just a little.

"I'll think about it."

He groaned.

She grinned.

And just like that, her mood was lighter again.

Because for all her whining and threats and pouts-

He always listened.

Even when she didn't say it outright.

Even when she was too embarrassed to admit she just wanted attention.

He knew.

And that was enough.

---