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Strong Hearts: The Legacy of Do Sisters- By: Tina Marie


Chapter 8 - Masks, Lies, and a Familiar Face

Last Updated on 2025-06-09 21:50:53

The Blue Star Dynamics Innovation Summit looked like a paradise for tech nerds and billionaires.

Held in a glimmering hotel in downtown Seoul, it was all holographic displays, sleek drones, and executives pretending they cared about “changing the world.”

But for Do Rae and Do Rin, it was a hunting ground.

Rae wore an all-black pantsuit, fake glasses, and a conference badge that read “J. Lee – Logistics”.
Rin was in a crisp blazer, hair tied back, her badge reading “H. Park – Systems Analysis”.

They moved separately, as planned. No contact. No eye rolls. No twin telepathy.

Just surveillance. Extraction. And if needed—detonation.


Rin slipped through the crowd like a shadow, tracking a name she’d pulled from Finch’s flash drive: Dr. Han Ji Myung— former chief of biochemical development under Mi Na’s prototype team. Now, Blue Star’s lead consultant in “adaptive enhancements.”

She found him presenting in a private room labeled Restricted Access – Blue Tier Only.

So naturally, she picked the lock.


Meanwhile, Rae loitered near the refreshments table, snagging three sodas and eavesdropping on a pair of execs arguing about “reliability rates” and “public rollout delays.”

But just as she turned to fake another casual stroll—someone bumped into her.

Hard.

She spun around, ready to glare, when her breath caught.

He was tall.
Sharp suit.
Clear eyes that flicked to her face and widened just slightly.
Then came the smirk.

“...Rae?”

Jin Seok.
Rookie cop.
Her secret crush since sophomore year.
Last seen chasing carjackers and writing her annoying parking tickets like love letters.


Rae froze. “What are you doing here?”

“I could ask you the same thing,” he said, lowering his voice. “You’re not exactly blending in.”

He glanced at her badge. “J. Lee? Really?”

“Why are you here?” she demanded.

He leaned closer. “Assigned undercover. Joint task force. Blue Star’s being investigated for illicit medical testing and offshore trafficking. But you don’t know that, because you are not supposed to be here.”

Rae cursed under her breath.

“So either you leave now,” Jin Seok added, “or I report you… and probably get fired for letting you go.”

She sighed. “Well, since you’re here, maybe you can help me find a certain lab guy named Han Ji—”

“I saw your sister follow him ten minutes ago.”

Rae paled.

Then sprinted.


Inside the restricted room, Rin had cornered Dr. Han.

“Why are you replicating Mi Na’s work?” she demanded. “Do you even know what that formula did to people?”

Han Ji Myung didn’t even flinch.

“You don’t understand what’s at stake. This isn’t about legacy. It’s about evolution. Mi Na didn’t fail—she started something bigger than blood.

Rin stepped closer. “If you’re trying to evolve humans, why keep tracking me?”

Han smiled.

Because that’s when the trap snapped shut.

“Because, Do Rin… you’re the control group.


Rae burst in.

Dr. Han pressed something on his wristband.

The lights flickered.

From hidden walls, two men in tactical gear emerged—backs straight, eyes empty.

Rin stared. “Enhanced.”

“They volunteered,” Han said smoothly. “Didn’t even need full doses. Just fragments of the original serum, mixed with your genetic trace.”

Rae’s fists clenched. “They’re using our blood?”

Han smiled. “You’re not just your mother’s daughters. You’re the future market.


Ten seconds later, the room was chaos.

Rae dropped one enhanced guard with a flying kick that shattered the projection screen.
Rin used the broken display cord to trip the other, smashing him into the control table.
Glass. Sparks. Screams.

Jin Seok burst in just as Rae lifted a six-foot man over her head.

He blinked.
“Okay. Yeah. That explains a few things.”


The twins escaped through the service stairwell, sprinting into the night with a stolen data drive and one stunned police officer who now knew way too much.


Outside, in a black sedan, a woman watched the hotel entrance.

Long coat. Sunglasses. No emotion.

Do Mi Na whispered to herself, watching her nieces disappear into the dark:

“Let the hunt begin.”

Other Chapters
Characters
  • Do Rae
    Do Rae

    (18 years old) Fiery, bold, athletic, often acts before she thinks. Hates being compared to Bong Soon.

  • Do Rin
    Do Rin

    (18 years old) Observant, tech-savvy, introverted, feels overwhelmed by the family legacy.

  • Jin Seok
    Jin Seok

    (22 years old) Rookie police officer, Do Rae’s love interest, brave but clueless about her strength.

  • Kang Jae
    Kang Jae

    (21 years old) Hacker with a criminal past, Do Rin’s love interest. Tied to the villain’s network.

  • Do Bong Soon & An Min Hyeok
    Do Bong Soon & An Min Hyeok

    Bong Soon is older, wiser, still powerful, juggling motherhood and her own past enemies. Min Hyeok is a doting dad, now a CEO of a global tech company with secrets buried deep.