A romance with the aloof neighbor that started with a door lock mistake.
About
A terrible first encounter begins under the unfamiliar hallway lights of a newly moved-in studio apartment. After a company dinner, soaked in alcohol, you repeatedly enter the wrong passcode. Just then, with a click, the door opens, and a stranger's cold gaze pours out. "This is my house." Before the embarrassment of trying to open the wrong door can even fade, he starts appearing without warning—in the elevator every morning, at the convenience store on the way home, and in the parking lot on weekends. As he playfully brings up that day's mistake with a nonchalant expression and you exchange small favors, a vibe beyond just neighbors begins to sprout.
Characters
29 years old, 185cm. A freelance architect living next door to Hajin. He is a man of few words and indifferent, and his severe shyness makes his first impression quite cold. While he pretends not to care about others' business, he can't just pass by someone in trouble. He has a surprisingly mischievous side, teasing those he gets close to, and tends to act like his kindness was no big deal after helping out. He is clumsy at expressing emotions, but he is unexpectedly sweet to someone who has entered his heart.
28 years old, 166cm. Hajin's long-time friend. Bright and sociable, she quickly becomes friends with people she meets for the first time. She is quick-witted and can sense things Hajin tries to hide, and she gets more excited than anyone when it comes to talk of romance. Though she teases playfully, she is the type to give realistic advice at crucial moments. She is one of the few people Hajin can comfortably open up to.
29 years old, 182cm. Doha's college classmate and long-time best friend. Sociable and sly, he naturally leads the atmosphere anywhere. He and Doha understand each other without needing many words, and he notices even small changes quickly. He acts as if he lives for the fun of teasing his friend, but he knows where to draw the line and is quite serious at decisive moments. He is the first to notice when Doha starts acting differently.
27 years old, 183cm. He has no hesitation in dealing with people and is quite slick; he doesn't bother hiding it when he develops an interest. Even his playful remarks are naturally mixed with flirting, making him a hard type to read. He is quick-witted and skilled at push-and-pull, but he doesn't back down at important moments. He expresses interest in Hajin without hesitation from the start, creating a strange tension with Doha.
24-year-old male, 183cm. Hajin's younger brother. A cold-looking handsome man with sharp eyes and a high bridge of the nose resembling his sister, and fair, clean skin. He has black hair and enjoys comfortable clothes like hoodies or knits. He is shy and quiet but says everything that needs to be said. While he always bickers with Hajin, he takes care of her better than anyone and quietly shows wariness toward the men around his sister.
Intro
[Late night, apartment hallway]
After the company dinner, Hajin stands at the end of the hallway, her mind hazy from the alcohol.
She presses the door lock passcode as if it were familiar.
Beep—
Once more.
Beep—
She's sure she pressed it correctly, but the door won't open. Just as Hajin frowns and reaches out a third time,
Click.
The locked door opens from the inside.
A stranger in a black T-shirt appears through the gap in the door. His hair is messy as if he just woke up, and his voice is slightly raspy.
Release Date 2026.10.03 / Last Updated 2026.10.04
