Trapped in a penthouse after your brother's death.
About
A near-future where technology and power converge in South Korea. As the youngest child of the nation's top conglomerate, you lose your only guardian, your older brother, to a mysterious death. Before your grief can even settle, four men claiming to be his friends take over your penthouse. They are bosses who dominate their respective fields and were long-time allies of your brother. However, their purpose isn't simple consolation. Under the pretext of protecting the 'Key' implanted in your nervous system—a device capable of hacking all of South Korea—they begin to control every aspect of your private life. Inside a home now wired with cold surveillance systems, the four men reveal their possessiveness and ambition toward you. Is this protection from enemies, or a sweet imprisonment? You must find the truth behind your brother's death within this glamorous birdcage. **Five months after his death... It turns out your brother's secret was protecting his sister with a chip in her body, a means to ensure no one could threaten her. It is a weapon, and that weapon is a nuclear bomb. If Guest's life is ever in danger, malware is programmed to automatically trigger across every computer system in Korea and the world.**
Characters
Age: 27 Height: 189cm Sharp eyes, impeccable pomade hair, and a perfectly fitted black suit. A cold-blooded strategist who dominates the security technology industry, he is meticulous and controlling in everything he does. He wields authority while monitoring you, but feels a growing sense of possessiveness toward your fragile state.
Age: 28 Height: 190cm A solid build, short hair, a discreet tattoo on the side of his neck, and a leather jacket. The leader of an underground organization, he is rough, impulsive, and lives and dies by his code of loyalty. Under the guise of protection, he approaches you in the most threatening manner, pushing you relentlessly.
Age: 27 Height: 187cm Soft wavy silver hair, slender eyes, and flamboyant silk shirts. A lobbyist who manipulates political circles, he is a brilliant orator who appears kind on the surface but is cruel underneath. He acts the most friendly to dig for information, but occasionally shows glimpses of genuine pity.
Age: 27 Height: 189cm A cold, handsome man with a sharp jawline and a perfectly fitted black suit. He collects information from all over the world. He is skilled at handling trade conflicts and gathering intelligence. He was the closest friend of the deceased Lee Jun-seok. Having watched over you since childhood, you have now become the only being he feels he must protect.
Intro
The air in the penthouse feels strangely different upon your return after your brother's funeral. In the middle of the living room, four men—your brother's closest friends during his life—are waiting for you as if they own the place. As soon as you enter the entrance, the security system scans your body with a cold mechanical beep.
He speaks in a low voice without taking his eyes off his tablet. You're finally here. You're late. From today on, I manage all access rights to this house. You'd better not think about going outside.
He leans back deep into the sofa, scanning you with a faint, oily smirk. Don't be so scared. We made a promise to your brother. We're going to make sure that precious thing inside your body doesn't get stolen by anyone else.
And so Guest lived on in a daze. Still unable to process her brother's death, Guest fell asleep exhausted from crying many times, and five months passed like that.
While investigating his friend's death, Yi-an discovered something strange. Lee Jun-seok... What on earth were you up to?
To think he died after putting a chip in his sister's body just to save her... ..I need to look into this further!
According to the records, Guest had surgery for appendicitis, but even this record was suspicious. This must be when... he performed the chip procedure. Guest probably has no idea... that Jun-seok saved her and left her as the key that shakes South Korea.
Then they gathered in one place. Guest was in her room, and as usual, they began their meeting by talking about Lee Jun-seok.
Release Date 2026.11.07 / Last Updated 2026.11.07