HOLYSHIT

The sun set, and darkness gradually enveloped the surroundings. The streetlights began to shine brightly. Four black sedans were parked in front of a building.
Cameras and lights were set up around the area, with dozens of staff surrounding the shooting zone.
At that moment,
"Water trucks!"
Director Kim Do-hee shouted into her walkie-talkie. As soon as she did, rain began to pour down on the set. Simultaneously, dozens of extras with black umbrellas entered the scene, all dressed in suits.
"Dim the lights!"
"OK!"
"More, more, more, stop! Let's go!"
As Director Kim Do-hee shouted, a male staff member clapped the slate in front of the camera. Then, Director Kim Do-hee signaled with her walkie-talkie.
"Roll camera! Action!"
Soon, the driver's door of the sedan at the end of the four parked cars opened abruptly. As expected, a man in a suit holding an umbrella got out, and he quickly moved to open the rear door of the car.
- Swoosh.
Kang Woojin, with a cigarette in his mouth, got out from the back seat. One of his hands was shoved into his pocket. Even though he was in a suit, he wasn't wearing a tie, and the top button near his neck was undone. A glimpse of a dark tattoo could be seen on his exposed chest.
“Hoo-”
He exhaled a long puff of cigarette smoke. On closer observation, a scar could be seen on his left cheek – a knife wound. His skin looked rough, as if it would be scratchy to touch. However, his slicked-back hair was neat. His eyes seemed slightly droopy, but the pupils were fierce.
“......”
The atmosphere around him was malleable but contained a palpable violence. It was an aura that suggested one wrong word might cause him to slit your throat on the spot.
Yes, right now, he wasn't just Kang Woojin; he embodied ‘Lee Sang-man’.
Soon after, Sang-man scratched his right forearm lightly and patted the shoulder of his subordinate who was holding the umbrella over him. His expression remained neutral. The subordinate, realizing it might be a gesture of approval, bowed his head.
"Thank you."
Maybe the smoke got in his eye, but Sang-man squinted and yanked his subordinate by the hair.
"Come closer. I'm getting wet."
"Oh, I'm sorry!"
"Or is that what you want?"
"No, no, Hyung!!"
Lee Sang-man’s voice was low and raspy, as if he had a lot of phlegm. But each word carried a warning. Lee Sang-man stared at his subordinate, who felt increasingly oppressed.
A fear of the unknown abyss.
Even the simple act of closing his eyes couldn't be taken lightly. Lee Sang-man kept his gaze fixed on the subordinate, slowly taking the cigarette from his mouth. A long plume of smoke emerged, dispersing between the orange streetlights.
Once again, as he took a deep drag from his cigarette, Lee Sang-man looked quite displeased. The humidity, his mood, the itching on his forearm, even the sound of rain hitting the umbrella.
That was Lee Sang-man.
- Swoosh.
With the cigarette still in his mouth, Sang-man shifted his gaze to a distant spot behind his gathered subordinates. He was looking at the line of street lights. The closely spaced orange lights. Why was he looking at the street lights? Was it because they looked cool? No.
"They're dancing."
In Lee Sang-man's eyes, the orange lights were gently swaying. Only in his eyes. A side effect of addiction. Thanks to this, Lee Sang-man smirked briefly. Damn, what was that? It briefly looked like a merry-go-round. The small trace of amusement on Lee Sang-man's face slowly vanished.
“Hoo-”
Lee Sang-man, with his stoic expression, blew out the cigarette smoke, obscuring the view of the street lights. However, the smoke quickly rose up into the sky. Thus, the damned orange lights were visible to Lee Sang-man again.
He became more irritated. The itchiness on his arm intensified.
At that moment, a man's desperate scream echoed.
"Hyung! Please spare me! I must have been out of my mind! Please, Hyung!"
By the building entrance, a man was kneeling. His face was severely battered. Lee Sang-man slowly looked down at him. The man kept shouting, but Lee Sang-man couldn't hear him clearly.
- patpatpat!
- patpatpat!
The sound of the pouring rain drowned out the man's cries.
“......”
So, Lee Sang-man just stared at him. Emotion was completely absent from his gaze. Yes, it was the kind of look one gives a mere bug. There was nothing. There was no need.
The answer was clear. Crush it.
-Whoosh.
Lee Sang-man, who was looking at the man, stretched his hand outside the umbrella. The pouring rain ruthlessly struck his hand. Cold and sharp, it resembled Lee Sang-man's own aura.
At that moment, Lee Sang-man murmured softly.
"It's going to burn."
The subordinate with the umbrella asked, puzzled.
“Huh?”
"The sea. It's going to burn."
“Ah.”
Then, Lee Sang-man, with one step closer to the man whose face was drenched in blood, crouched to meet his eye level. Once again, he scratched his forearm and blew a long puff of cigarette smoke in the man's face.
"Why are you so thin?"
"Hyung! I really messed up! Just once! Please forgive me just once!"
"I said you're thin."
“......”
With a chilly tone, Lee Sang-man took the cigarette from his mouth and brought it close to the man's nose. Or more precisely, he placed the cigarette where the raindrops were sliding off the man's nose. The cigarette sizzled instantly.
“Open your mouth.”
The soaked cigarette was held in front of the man by Lee Sang-man, who spoke in a peculiar tone. The man, however, had a puzzled expression.
“......Yes??”
“Open your mouth. Wider.”
“!!”
"Open it."
Soon, the bloodied man's mouth gaped open, and Lee Sang-man shoved the cigarette he was holding into the man's throat. It was merciless, as if with enough force to reach the man's innards.
"Cough! Cough!"
"Have that and puff up your face a bit."
"Cough! Cough!"
"You look too skinny right now."
With a raspy voice, Lee Sang-man slowly turned his head to his subordinate. Every movement he made, from start to finish, was composed.
"Dump him in the water."
The subordinates understood his order instantly. They were to throw the man into the sea, making his body swell with water. Soon, the man was dragged away by a few of the subordinates. He screamed madly, but it didn't reach Lee Sang-man's ears.
Lee Sang-man stared straight ahead, where the obstacle had disappeared.
He saw the stairs leading up to a building. They were gloomy and dark, and for some reason, they seemed to Lee Sang-man like a pathway to liberation. He moved forward without hesitation.
Soon, a subtle smile appeared on his face.
"......"
His facial muscles twitched slightly. His mood heightened. His brain was urging him to do something impulsively. To run, because it's right in front of him. Lee Sang-man's smile wasn't a smile.
It was a smile of death.
Death lingered on his lips.
It was a graceful and profound death. It was an expression of that magnitude, that depth. The death that spread across Lee Sang-man's face grew more profound. And with that death on his face, Lee Sang-man entered the building. At that moment, he brushed past a camera stationed near the stairs.
The camera kept its focus straight ahead. After passing the camera, Lee Sang-man stopped abruptly.
A brief moment of silence.
It was the timing for a cut. But no sound was heard, only the pattering rain echoing throughout the building.
The reason was simple.
"...... Insane."

If you guys wanna read the novel on this part of the story I HIGHLY recommend it! His acting here cannot be topped! I'm just sad it wasn't conveyed properly in the manhwa

https://woopread.com/series/i-was-mistaken-as-a-monstrous-genius-actor/chapter-76