Kang Woojin's official fan club, Kang's Heart, had a general manager with the username BloodSister.
At first, Woojin thought it was just a strange nickname.
But there was a twist.
It literally meant blood relative.
In other words, Kang Woojin's actual younger sister, Kang Hyunah, was standing right in front of him.
Woojin looked up at her, irritation boiling inside.
'Don't lose it. Damn it… I thought this morning would be peaceful, but this is insanely irritating.'
He barely held back the urge to curse and kept his mouth shut.
At the same time, he quickly pieced things together, though there was not much to figure out.
'So that's why she suddenly went quiet. She used to text nonstop and call all the time.'
When was it?
Right.
It had to be around when Profiler Hanryang started airing.
That was when the official fan club had been created.
'That brat definitely made it.'
Of course, there was no way she did it alone.
Keeping his face blank, Woojin flicked his eyes toward the line behind Kang Hyunah. A group of girls who looked like her friends were gathered there, smiling brightly and playfully smacking each other's arms as they chatted.
Woojin looked back at her and muttered under his breath.
"You little brat."
No one else could have heard it.
But Kang Hyunah probably did.
She simply shrugged.
"I didn't say anything because you looked busy, oppa."
What a ridiculous lie.
She had obviously hidden it on purpose.
'I seriously want to smack that forehead.'
But Kang Woojin was currently trapped inside his perfect persona, and there were fans everywhere.
No matter what, he had to endure.
Just then—
"Why? What's going on?"
Sensing something strange, Choi Sunggeon, who had been waiting behind him, stepped closer and leaned in.
Woojin forced down his irritation and answered casually.
"It's nothing."
Choi Sunggeon looked puzzled and met Kang Hyunah's eyes.
She was definitely pretty, with long brown hair and a soft, bright face.
'She looks tall too. Around 168… maybe 170?'
It was the kind of quick scan only an agency CEO would make.
Even so, he smiled warmly at her.
"You're the first one in line, right? The fan club's general manager using the nickname BloodSister."
"Yes! That's me!"
"Haha, nice to meet you. I'm Woojin's manager and the CEO of BW Entertainment."
"Wow! Hello!"
"Yes, nice to meet you too. We should've thanked you sooner, but Woojin's been so busy. You came with the other club staff, right?"
"Yes! They're behind me!"
When Kang Hyunah pointed behind her, the fan club staff and her friends all bowed politely.
Choi Sunggeon gave them a brief nod and looked back at Kang Hyunah.
For some reason, she felt oddly familiar.
"That's strange. Why do I feel like I know BloodSister? Haha, maybe it's because you look like an actor."
"Hehe, really?"
Meanwhile, Kang Woojin, who had been signing as if nothing was wrong, quietly muttered—
"She's my younger sister."
Without thinking much of it, Choi Sunggeon clapped his hands.
"Ah, I see! So you're Woojin's younger sister. That's why you didn't feel like a stranger—wait. Woojin, what did you just say?"
After finishing the autograph, Kang Woojin handed the paper to Kang Hyunah and repeated himself without emotion.
"She's my younger sister."
Choi Sunggeon's eyes widened as he looked back at Kang Hyunah.
She was smiling brightly enough to light up the room.
"Hehe, hello, sir. I'm Kang Woojin's younger sister, Kang Hyunah."
"…?"
Unlike the flustered Choi Sunggeon, Kang Woojin remained calm.
No, he had to remain calm.
Then, with a cold look, he spoke.
"You. Step aside for now. We'll talk later."
Kang Hyunah gave an awkward laugh and stepped away.
Inside, however, she was puzzled.
'Is oppa acting cool because of the atmosphere? There are so many people watching.'
After she moved aside, Choi Sunggeon finally regained his senses and leaned closer to Woojin.
"Woojin, what are you talking about? Is she really your sister?"
"Yes. I didn't know she was the fan club manager either."
"Alright… we'll talk after this is over."
"Understood."
After that, Choi Sunggeon signaled the staff to continue the signing event.
'His younger sister?'
He stepped back with a smile.
Of course, he knew Kang Woojin had a younger sister. Knowing an actor's family background was basic.
Still, the situation felt strange.
'Whatever the case, this has to stay secret for now.'
If word got out, reporters might swarm not just Woojin, but his entire family.
Thankfully, no one else seemed to know.
That made it manageable.
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Back at the venue—
"Oppa! Hello!"
The fan signing event continued as planned.
The next group up was Kang Hyunah's friends.
"We really, really missed you!"
"Yes, nice to meet you."
"We knew oppa even before he debuted!"
"Thank you."
They came up one by one, practically vibrating with excitement.
Woojin remained calm as he signed and spoke.
"Thank you. What's your name?"
"Kim Yujin!"
"Yujin, you're pretty too."
"Ah!"
There were a few awkward moments at first, but the event quickly stabilized.
Woojin focused.
He made eye contact.
He spoke.
He signed.
"Excuse me… would it be okay to shake your hand?"
"Of course. I'll give you a hug too."
"Ah!"
Even though he looked indifferent, there was something unexpectedly gentle about him.
Because of that, the atmosphere only grew warmer.
Thirty people.
Fifty.
One hundred.
At that point, Woojin felt it.
'Wow… this really isn't easy.'
He was gradually becoming overwhelmed.
Of course, he was grateful.
Of course, he was surprised.
But it was not easy.
Maintaining his persona while giving his best to every fan in such an unfamiliar environment took everything he had.
Still—
He endured.
'Just get through this. I can rest when I get home.'
The path he had stepped onto was far from easy.
'If a fan signing is this hard… a fan meeting must be worse.'
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Meanwhile, at the Profiler Hanryang filming set in Ilsan—
It was a massive set.
Both the main team and Team B had gathered, and more than a hundred people filled the site.
"Action!"
Filming was in full swing.
"Cut! Good!"
The shoot was moving quickly.
More than anything, Song Manwoo PD was pushing the pace.
"Move straight into the next one! Let's finish before lunch!"
Everyone moved smoothly.
But one thing stood out.
"All the actors are here too. Woojin's the only one missing."
"I heard he couldn't come because of the fan signing today."
It was rare for the entire cast to gather like this.
Even Park Eunmi was there.
Hong Hyeyeon stood nearby, and beside her was Kim Daeyoung, looking around curiously.
'So this is where Woojin filmed?'
The more he thought about it, the more impressive it seemed.
Then—
"Cut! NG!"
Song Manwoo PD shouted.
The actor playing the final villain had made another mistake.
Whispers spread among the staff.
"Assistant Manager Park set the bar too high."
"The pressure must be insane."
Kim Daeyoung frowned.
'He looks fine though…'
But the staff disagreed.
"Woojin's impact was huge."
"Legendary."
Daeyoung sighed.
'He's basically treated like a god here.'
Then—
"Cut! Let's take a short break!"
Song Manwoo PD called for a pause and approached the actors.
"Hong Star."
"PD, please stop calling me that."
"It suits you. Anyway, let's shoot your scene first."
"Understood."
As she stood, Hong Hyeyeon suddenly remembered something and pointed at Kim Daeyoung.
"PD, do you remember him?"
"…Should I?"
"He came with Woojin during Super Actor."
A brief pause.
Then—
"Ah! Woojin's friend!"
Immediately, everyone gathered around him.
Questions poured in.
"Since when?"
"Did he study overseas?"
"Is he really self-taught?"
Daeyoung froze.
'What are they even talking about?'
English?
Japanese?
Overseas?
This did not match the Woojin he knew.
Still, he answered carefully.
"It's hard to explain…"
Before things escalated—
"Alright, back to positions!"
The crowd dispersed.
Hong Hyeyeon leaned closer.
"Tell me. Is Woojin not interested in women?"
Daeyoung thought for a moment.
'He barely watches TV… never cared about girl groups either.'
Then he answered bluntly.
"I guess… he doesn't show much interest."
"Ah—"
──────────
Three hours earlier—
"Cut!!!"
Song Manwoo PD shouted.
"Alright! Great work, everyone!"
Profiler Hanryang had officially wrapped filming.
──────────
Back at the fan signing—
Over three hundred people had gathered.
The event had lasted more than three hours and was finally nearing its end.
Meanwhile, news had already spread online.
『"Monster Rookie" Kang Woojin Fan Signing Event Packed with Fans』
Photos flooded social media.
[Online reactions]
[those photos are real??]
[he looks insane in real life]
[why is he even better in person]
[this is crazy]
At the venue, Kang Woojin gave his closing greeting.
"Thank you so much for coming today."
He bowed deeply.
"We'll be holding a fan meeting soon, so please come and enjoy it with us. Get home safely, and don't forget your gifts on the way out."
As he lifted his head, he met someone's eyes.
Front row.
Kang Hyunah.
She smiled brightly and waved.
A few minutes later, the event ended and cleanup began.
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Inside the waiting room—
Kang Woojin.
Choi Sunggeon.
Kang Hyunah.
Woojin's heart pounded.
'If you mess this up, you're dead.'
He kept his focus on her.
Choi Sunggeon checked the hallway and closed the door.
Click.
Woojin met her eyes.
Then—
Kang Hyunah spoke first.
"Sir! Your hairstyle is really stylish and cool!"
Woojin sighed inwardly.
'…Please just be quiet.'
Choi Sunggeon smiled.
"Haha, thank you. What was your name again?"
"Kang Hyunah!"
"Alright, let's hear it. What happened?"
She explained everything.
Nothing particularly shocking.
Just a younger sister who had started a fan club after being surprised by her brother's debut.
Up to that point, everything was manageable.
Then—
The real problem appeared.
"But sir! I watched the Hanryang Sports Day episode, and my brother's character was kind of—"