37. The Tsundere Tomboy Seo Hye-jin Who Experienced Brother-in-Law's Massive, Thick Leadership Flesh.

'Gloria Jang is Jang Do-hee????'

Though Geum Tae-yang was looking at Jang Do-hee as if recognizing an old acquaintance,

the name that surfaced in his mind wasn't Jang Do-hee—it was Gloria Jang.

"What? Do you two know each other??"

Seo Mi-na, who had been staring at Geum Tae-yang's face right beside him, glanced back and forth between him and Jang Do-hee, picking up on the strange atmosphere.

"Really?"

Kim Seo-hui also reacted to that.

"Corporal Geum Tae-yang of the Army 21st Infantry Division Reconnaissance Battalion, correct?"

In the Division Head's office now thick with bewilderment and questions,

it was Jang Do-hee who first brought up a concrete keyword.

Her eyes held certainty, but regardless, she sought clear confirmation.

Because the rough-around-the-edges soldier Geum Tae-yang of back then and the polished future son-in-law of a quasi-chaebol now were worlds apart in presence.

"That's right! That's me. And you're Chief Team Leader Gloria Jang of the AGS PMC Special Support Team, aren't you?"

As his exact former unit

and Jang Do-hee's position at the time were mentioned,

Geum Tae-yang ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠answered with a bright smile.

"Yes, I'm Gloria Jang. That was the name I used at the PMC. It's good to see you. Who would've thought we'd meet again like this."

A sly grin...!

When Jang Do-hee first entered the Division Head's office, her face had been nearly expressionless, close to a poker face.

Yet upon hearing Geum Tae-yang mention their shared past in the PMC, she responded with a gentle smile, unable to hide her delight. "So that was the connection. How truly astonishing."

The four of them took their seats on the reception sofa in the Division Head's office,

and as Kim Seo-hui listened to the details of Tae-yang's connection with Jang Do-hee, she couldn't suppress an elegant gasp of admiration. "For me, it was my final mission as part of the PMC. The fact that it was disaster relief in Korea made it all the more meaningful."

AGS—Aurelius Global Security—where Jang Do-hee had served, was a long-established PMC headquartered in Switzerland. They frequently collaborated with military forces across different countries, and Korea was no exception. Then, during the severe floods that struck Korea the summer before last, AGS dispatched a disaster relief support team. The chief team leader of that special support unit was none other than Gloria Jang—Jang Do-hee herself. "Corporal Geum Tae-yang was someone who stood out in an extremely positive way, Division Head. His leadership was remarkable, and he led by example, working harder than anyone else in flood recovery efforts."

As fate would have it, the disaster-stricken area was where Tae-yang had been stationed during his military service. Naturally, his unit was also mobilized for flood recovery,

and they inevitably crossed paths with AGS's special support team. "But the reason we can reunite with such deep impressions is because Corporal Geum Tae-yang is my lifesaver."

Sure, a positive impression was one thing. But under normal circumstances, it would've been unlikely for them to grow close enough to address each other by name. There was another reason that made it possible. "Lifesaver?"

"Yes, Division Head."

Geum Tae-yang had saved Jang Do-hee's life. "Hah! You're making it sound like I was the only one who did anything. You saved one of my juniors, so I owe you just as much."

Embarrassed by the praise, Tae-yang scratched his head and tried to downplay it. During the flood recovery efforts, another downpour struck. The makeshift embankment collapsed,

and one of Tae-yang's juniors was swept away in the torrent. Jang Do-hee had jumped into the ravine to rescue him, but the water level surged in an instant, putting her in peril as well. "I did hear that Chief Team Leader Jang had visited Korea for flood relief. But I had no idea something like that happened."

"Since it involved a PMC, the incident wasn't disclosed to the media, separate from the general flood recovery reports, Division Head."

Though he had brushed it off with a joke, Tae-yang was inwardly pleased by Jang Do-hee's explanation. If anything, her calm, factual retelling only elevated his standing further. "How did you know the area's geography so well?"

"I lived there with my grandmother until early elementary school. Ran around all over the place with the neighborhood kids."

"Ah..."

The ravine's complex terrain made rescue efforts difficult. Yet, miraculously, Tae-yang pinpointed the exact rescue zone,

and as a result, both Jang Do-hee and his junior were pulled out safely, unharmed. "Just knowing the area doesn't guarantee success, does it? The fact that you recalled it so quickly in that situation and kept everyone composed—that's what's truly impressive. And you were only 21 at the time."

"I agree, Division Head."

Kim Seo-hui was maintaining her composure, but her admiration was evident. Earlier, she had judged Tae-yang as a promising talent based on their conversation alone,

but what she learned from Jang Do-hee far surpassed that assessment. "Why didn't you ever tell me this story before?"

"Girls hate military stories, don't they?"

"That's not even a military story in the first place!!"

Seo Mi-na, who knew her aunt best, could read Kim Seo-hui's emotions perfectly. Pride swelled in her chest—her man was being recognized like this in front of her aunt. But at the same time, she was a little miffed. If Tae-yang had told her earlier, she could've bragged about him beforehand. "Corporal Geum Tae-yang—no, Mr. Geum Tae-yang—will undoubtedly be able to complete the Ceremonial Security Team's ESP Training. Based on indirect experience, his physical endurance, mental fortitude, and crisis response all exceed the set standards."

ESP Training stood for Executive Security Protocol,

the Ceremonial Security Team's training program. Though Tae-yang worked in the Secretary's Office, he was still part of the Ceremonial Security Team and thus had to undergo the program. "I see. What do you think, Mr. Geum Tae-yang? I won't force you. Even if you refuse, I won't hold it against you. In fact, I'd be happy to find other work for you in our company."

"I'll do it! I'll give my all to fulfill my duties as ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠Protocol Security Chief and ensure neither the Division Head nor my mother-in-law, who recommended me, will be disappointed."

Tae-yang had a hunch. This was going to be one hell of a training regimen.

But truthfully, he preferred that far more than sitting idly in an office. "Sounds good. Since today was mainly for marriage formalities, I'll ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠head back now. You're moving into the penthouse tomorrow, right?"

"Yes!"

"Then start work the day after that."

And just like that, Geum Tae-yang had successfully landed the job. "Auntie must've taken quite a liking to you."

"Seems so. Guess I managed to showcase my skills."

"No, not like that. More like... familiarity? She seemed comfortable around you."

"Why?"

As they drove back to the semi-basement in the Ferrari Thanamera, Seo Mi-na shared her observations. "When Auntie feels that kind of closeness, she starts slipping into informal speech mid-conversation, even when discussing work."

"Ah..."

"It means she sees you as one of her own—or at least someone who could be."

"So that's a good thing?"

"No. She dumps all the work on people she trusts."

"Well, fuck..."

Tae-yang was now at risk of becoming the Queen's personal stress doll. "Welcome to the family, Tae-yang~!"

"Boom! Kaboom!"

Whoosh! Bang! "I'm so happy Brother-in-law is joining us!"

The next day, Tae-yang moved into Kim Seo-yeon's penthouse,

and by evening, even Jang Do-hui had gathered for a welcome dinner in his honor. His future mother-in-law, Kim Seo-yeon, greeted him with open arms, her ample bosom swaying as she delivered her welcome speech,

while Seo Ji-eun enthusiastically set off celebratory firecrackers,

and beside her, Seo Da-hye clasped her hands together in pure delight. "Thank you, Mother! Thank you, sisters! ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠Thank you, noona!"

"Hehehe! Brother-in-law's hair got all messed up like an idiot!"

Bowing deeply, Tae-yang expressed his gratitude to his new family, who had welcomed him so warmly. It was overwhelming. After his grandmother's passing, he had become an orphan with no one left—

not that he'd dwelled on it much, but having a family again was something else entirely. "September? That soon?"

"Honestly, I'd do it next month if I could. We only pushed it to September so Tae-yang could adjust to his job."

The lively family party continued,

and Jang Do-hui, sipping wine, reacted with a rare flicker of surprise at Mi-na's words—which, by her standards, was a big reaction. Kim Seo-yeon had suggested waiting until after graduation and marrying next spring instead,

but Seo Mi-na, refusing to compromise, insisted on pushing through with the September wedding. "How about you move back in until the wedding, unnie?"

"You know me. I run hot—I'd just wander around naked."

"Tae-yang would adjust quick, right?"

"You think Mom would let that slide?"

Jang Do-hui had been living separately ever since returning to Korea the year before last. A fitness fanatic even at home, she roamed around in nothing but underwear. "I like it."

"What?"

Watching Kim Seo-yeon dance a slow waltz with Tae-yang while Seo Da-hye and Ji-eun giggled beside them, Do-hui murmured softly, "Mom and the girls look happy."

Of course, her living apart wasn't solely because of that. 'Fine, I'll admit it.'

There was one more person observing Kim Seo-yeon's joyful dancing from the couch, her expression devoid of laughter. 'He really is considerate and reliable, that much is true.'

That was Seo Hye-jin, the third sister.

Despite this being their first meeting at the penthouse, Hye-jin had been scrutinizing and evaluating Tae-yang the entire time. "Oh? Does Young Master Geum Tae-yang know our daughter too?"

"Of course! I'd go so far as to say Bae So-hee is my ultimate bias!"

"Oh my... How kind of you..."

"Her last single, Sunflower, and the recent one, Domino Love—"

"Thank you...! Thank you for cherishing our So-hee..."

"The honor is mine. To meet the mother of my favorite idol like this..."

From the moment Tae-yang returned to the penthouse, the household erupted with energy. He was everywhere, meddling in everything—but his meddling came from genuine care. Just look at him bonding with Bae Hyeon-jeong, mother of his favorite idol, Bae So-hee. 'With that kind of warmth, no wonder So-min opened up to him too.'

Watching him, Hye-jin fully grasped Tae-yang's explosive charisma. Until now, she'd only heard about it or seen the results. But witnessing the process firsthand was different. Geum Tae-yang was practically a human capybara. "Come here, Ji-eun! You snooped through my phone, didn't you? I'll spank you right on this couch!"

"Eek! Save the pretty high school girl~~! Da-hye unnie, save your maknae~~!"

'But how can someone so carefree become the head of this household...?'

Then what, exactly, was the problem? Simple. Geum Tae-yang was supposed to be the future patriarch of this family. As the eldest sister's husband, that was his role. And in Hye-jin's eyes, he fell short of what this large family needed in a leader. 'Everyone's just laughing and having fun...'

"How is it that everyone's the same except me?"

Seo Hye-jin thought to herself. Shouldn't this be something to consider, especially when the wedding is just around the corner? Because, having experienced the working world early, she had deeply felt the importance of leadership. Yet, in this household, she was the only one—to put it harshly—who was genuinely concerned about Geum Tae-yang's frivolousness. Even her own mother, the CEO of Galleria Cheongdam, whom she had trusted, melted into laughter the moment Tae-yang came home from work, completely disarmed by his overwhelming charm. "Haha, hoho!"

But then, something happened that made Hye-jin realize Tae-yang's lightness wasn't mere recklessness—it was the ease of someone truly strong.

"Brother-in-law, didn't you have a company dinner yesterday? Shouldn't you be awake by now?"

Seo Hye-jin had stayed out last night due to school obligations.

Truthfully, she still had more work left to do, but she'd postponed it for now and was on her way home.

Because she had a prior commitment.

'What the hell is up with Brother-in-law's ESP completion status?'

Geum Tae-yang was currently in the middle of completing the Ceremonial Security Team's ESP Training program.

Jang Do-hui had incorporated the grueling physical conditioning structure from her time as a PMC cadet, and since Tae-yang was a latecomer to the training, he was determined to work extra hard. Even on days without official training, he was using Seo Hye-jin—who attended physical education college—as his workout partner.

Today, a Friday, happened to be one of those days.

Because Hye-jin took commitments seriously, she prioritized this over her own work.

'Do-hee unnie said Brother-in-law is keeping up with the training incredibly well, but whenever he comes home, he's too busy groaning in pain and slapping on pain relief patches.'

Geum Tae-yang always came home groaning after training days.

Not only that—he even groaned during supplementary training with Hye-jin.

The problem was that Jang Do-hui was evaluating him at nearly the highest possible level.

Since Do-hui strictly separated personal and professional matters and wouldn't sugarcoat things even for family, Hye-jin was confused.

'If we factor in sobering up from his hangover and getting ready, it'll probably take a full hour at least.'

But Seo Hye-jin was a realist who trusted what she saw firsthand.

'Huh? Did Big Sis come home? No way—she said she was meeting with her professor today.'

As she stepped into the foyer, planning to wake up her brother-in-law and wait for him to get ready, she spotted a pair of shoes that looked like her eldest sister's.

'She probably forgot to put them away while picking out what to wear.'

But she had spoken to Seo Mi-na on the phone last night.

So, convinced it was just another instance of her big sister's carelessness, Hye-jin headed up to the second floor where Tae-yang and Mi-na's room was located.

Her ears were currently occupied with earbuds playing music.

Creeeak...!

"Brother-in-law, are you still not up?"

Swooosh...!

The door to the secondary master bedroom was already slightly ajar. Hye-jin naturally pulled out her earbuds and pushed it open to wake him up.

But then—

"!!!!!!?????????"

Her eyes instantly widened to three times their normal size,

her mind flooding with roughly two million exclamation and question marks.

"What the hell am I supposed to do with you?! Why do you keep turning someone who just wants to live like a gentle lamb into a beast?!"

Thrust! Thrust! Thrust! Rock! Thrust! Rock!

Squelch!♡ Slurp!♡ Plunge!♡ Shove!♡ Deep plunge!♡ Slam!♡ Pound!♡

"Hngghh! Hnng!♡ Hahh! You hypocritical—! Hnnggh!♡ Hiding your true self in front of family! Hahh! Hnnggh!♡"

Geum Tae-yang, with pain relief patches stuck to his back,

was viciously splitting his muscular rear with each brutal thrust of his hips,

"What the hell am I hiding?! You're the one who dragged out this twisted side of me! That's right! Take it!"

Smack!♡ Smack!♡ Splat!♡

Plunge!♡ Slurp!♡ Pound!♡ Deep thrust!♡ Slam!♡

"Hahh! Nghh! Hahh! You fraud! Nghh! Treating your family with lies! Hahh! Nghh!"

Thrust! Thrust! Rock! Thrust! Rock! Rock! Thrust!

Because he was savagely drilling into her eldest sister Seo Mi-na's drenched, backshot pussy like an animal.