Kimi wa Boku no Everything (君は僕的 everything)

📖 PROLOGUE: The Symphony of Fractured Hearts

The world loved to look at Yeo Ji-woo, but they only ever saw a masterpiece behind bulletproof glass. She was effortless, breathtaking, and entirely untouchable—the kind of woman who made every man in the room hold his breath, hoping she might look their way.

I was just another ghost in the crowded art gallery, a university student with nothing to my name, watching the wolves circle her with expensive drinks and hollow promises.

Everyone warned me that a boy like me would get burned just by standing in her shadow. But as she turned her head and our eyes locked through the crowd for the very first time, my heart didn’t care about the warning.

No matter what they said, she was already becoming my everything.

A love story is never lived in isolation.

Before the first lyric of our song could truly play, the chessboard was already set. Fourteen distinct lives stood ready, destined to either build our sanctuary or tear it down to the ground.

👥 The 14 Essential Cast Profiles

1. Seo Si-woo (Male Lead)

Age / Year: 19 Years Old / Freshman (Music Composition Major)

Birthday: July 18

Appearance: Soft, unruly dark hair that falls into his eyes. He has wide, intensely expressive brown eyes, a slender build, and usually wears oversized knits, faded denim, and scuffed white sneakers.

Personality: Fiercely passionate, wear-his-heart-on-his-sleeve loyal, idealistic, and deeply artistic. He is naive about high society but possesses an unyielding emotional emotional courage.

Core Dynamic: The all-consuming lover who treats his partner as his entire universe, vulnerable to the crushing weight of his first real heartbreak.

Goal: To prove his love transcends age and status, and to write a symphony worthy of the woman who captured his soul.

Favorite Quote: “No matter what they say, she is the everything of my life.”

2. Yeo Ji-woo (Female Lead)

Age / Year: 24 Years Old / Head Curator at the Elite Yeo Gallery)

Birthday: December 14

Appearance: Strikingly elegant with sharp, cat-like eyes. Long, sleek dark hair falling over her shoulders, pale skin, and an immaculate, minimalist wardrobe consisting of silk dresses and sharp blazers.

Personality: Guarded, sophisticated, and deeply responsible. She masks her intense vulnerability and fear of abandonment beneath a flawless, icy professional exterior.

Core Dynamic: The older woman torn between the suffocating realities of her status and the pure, terrifyingly beautiful devotion of a younger man.

Goal: To protect the people she loves from her family’s toxic world, even if it means destroying her own happiness.

Favorite Quote: “Love is a luxury for people who own their own future. I don’t own mine.”

3. Lee Jin-ki

Age / Year: 23 Years Old / Senior (Music Composition Major)

Birthday: December 14

Appearance: A warm, gentle smile with monolids that crinkle when he laughs. Usually seen with messy hair, a faded corduroy jacket, and a canvas bag overflowing with sheet music.

Personality: Calm, deeply empathetic, steady, and wise beyond his years. He acts as the grounded, patient anchor for his chaotic group of friends.

Core Dynamic: Si-woo’s surrogate older brother and mentor who spots the warning signs of obsessive love before anyone else.

Goal: To graduate successfully while ensuring his friends don’t destroy themselves in the pursuit of their raw passions.

Favorite Quote: “A song that burns too hot at the start always leaves nothing but ashes by the final bridge.”

4. Kim Jong-hyun

Age / Year: 21 Years Old / Junior (Vocal Performance Major)

Birthday: April 8

Appearance: Intensely expressive, soulful eyes that seem to feel everything. Sharp jawline, silver-tinted hair, and a casual style dominated by leather jackets and silver rings.

Personality: Volatile, fiercely expressive, romantic, and deeply emotional. He lives his life at full volume and cannot hide his true feelings.

Core Dynamic: Si-woo’s emotional champion. He is the muse-driven artist who encourages Si-woo to chase his love regardless of the consequences.

Goal: To perform on the grandest stages and live a life completely devoid of compromise or regrets.

Favorite Quote: “If she is your melody, Si-woo, you sing her until your voice breaks and your lungs burn.”

5. Kim Ki-bum

Age / Year: 21 Years Old / Junior (Fashion Design Major)

Birthday: September 23

Appearance: Sharp, feline features with a perfectly styled undercut. Always wearing cutting-edge fashion, designer glasses, and carrying a sketchbook.

Personality: Sarcastic, fiercely protective, witty, and meticulously organized. He hides a heart of absolute gold under a layer of biting criticism.

Core Dynamic: The fierce protector of the group who provides sharp reality checks but will dissect anyone who dare hurts his friends.

Goal: To launch his own luxury fashion line and shield his vulnerable friends from the predatory high-society elite.

Favorite Quote: “If you are going to let a high-society goddess ruin your life, you are at least going to look decent doing it.”

6. Choi Min-ho

Age / Year: 20 Years Old / Sophomore (Physical Education & Athletic Major)

Birthday: December 9

Appearance: Tall, broad-shouldered, and athletic with large, intense eyes. He possesses a commanding physical presence and usually wears university varsity jackets.

Personality: Competitive, fiercely loyal, direct, and driven by an unshakeable sense of justice and brotherhood.

Core Dynamic: The physical shield of the brotherhood, always ready to stand shoulder-to-shoulder with Si-woo when high-society wolves make threats.

Goal: To win his championship titles and ensure no outsider ever breaks the bond of his chosen family.

Favorite Quote: “They think their money makes them untouchable. They don’t know what happens when you try to break one of ours.”

7. Chairman Yeo Jung-hoon

Age / Year: 56 Years Old / CEO of Yeo Conglomerate & Gallery Owner)

Birthday: March 3

Appearance: Steely grey hair, a razor-sharp posture, cold calculating eyes, and bespoke pinstripe suits. He carries an aura of absolute, terrifying authority.

Personality: Ruthless, controlling, pragmatic, and entirely transactional. He views human relationships purely through the lens of corporate leverage.

Core Dynamic: The ultimate antagonist in Ji-woo’s life, treating his daughter as a prized chess piece to secure his empire.

Goal: To merge his corporation with the Park Group via a strategic marriage, eliminating any obstacles in his way.

Favorite Quote: “An investment that brings no capital returns is simply a waste of time. That includes emotions.”

8. Director Han Chae-won

Age / Year: 45 Years Old / Managing Director of Yeo Group (Ji-woo’s Stepmother)

Birthday: November 2

Appearance: Strikingly beautiful but severe. Razor-cut bob hair, ruby-red lipstick, sharp stiletto heels, and heavy gold jewelry.

Personality: Ambitious, venomous, calculating, and status-obsessed. She despises any form of perceived weakness or class-transgression.

Core Dynamic: The domestic enforcer of the Chairman’s rules, actively plotting to dismantle Ji-woo’s secret romance with a lower-class student.

Goal: To secure her own absolute position within the conglomerate by ensuring the high-society marriage succeeds.

Favorite Quote: “Do not mistake a fleeting summer distraction for something that belongs in our world, Ji-woo.”

9. Park Hyun-bin

Age / Year: 27 Years Old / Executive Heir to the Park Group (Ji-woo’s Fiance-Elect)

Birthday: June 11

Appearance: Slicked-back hair, a patronizing smirk, and expensive designer watches. He moves with the smug comfort of a man who has never been told ‘no’.

Personality: Arrogant, entitled, possessive, and highly competitive. He views everything as a commodity to be acquired and displayed.

Core Dynamic: Si-woo’s primary societal rival, using his immense wealth and influence to demean and alienate the younger student.

Goal: To possess Yeo Ji-woo as the ultimate trophy wife and cement his total control over the business merger.

Favorite Quote: “Everything in this city has a price tag, kid. Know your place before you get crushed.”

10. Kang Min-jae

Age / Year: 26 Years Old / Rogue Art Dealer (Ji-woo’s Ex-boyfriend)Birthday: January 20

Appearance: Intentionally disheveled but expensive aesthetic. Dark, haunting eyes, a chaotic smirk, and a constant shadow of stubble.

Personality: Manipulative, toxic, charming, and deeply cynical. He understands exactly how to play on human psychological vulnerabilities.

Core Dynamic: The shadow from Ji-woo’s past who originally broke her ability to trust, returning to exploit her hidden secrets.

Goal: To drag Ji-woo back into his chaotic orbit and prove that true love is nothing but an agonizing illusion.

Favorite Quote: “You think that naive boy can save you from who you really are? You’ll break him just like the world broke us.”

11. Yong Sun-hee

Age / Year: 24 Years Old / Assistant Gallery Curator (Ji-woo’s Best Friend)

Birthday: May 17

Appearance: Bright, expressive face with round glasses. Often wears oversized blazers with paint smudges and has her hair tied up in a messy claw clip.

Personality: Cheerful, fiercely supportive, observant, and deeply romantic. She acts as a ray of warmth in the cold art gallery.

Core Dynamic: Ji-woo’s absolute confidante and secret accomplice who helps facilitate the quiet, stolen moments between the star-crossed lovers.

Goal: To see Ji-woo break free from her golden cage and experience genuine, unadulterated happiness.

Favorite Quote: “He looks at you like you’re the only star left in the night sky. Don’t let your fear turn out the lights.”

12. Shin Chae-young

Age / Year: 23 Years Old / Elite Socialite & Aspiring Artist

Birthday: October 30

Appearance: Glamorous and highly curated for social media. Long bleached hair, dramatic makeup, and flashy, avant-garde luxury outfits.

Personality: Jealous, superficial, vindictive, and deeply insecure underneath her wealthy exterior.

Core Dynamic: Ji-woo’s professional and social rival, actively seeking any vulnerability to compromise the head curator’s stellar reputation.

Goal: To expose Ji-woo’s scandalous secret relationship with a younger student and usurp her position at the gallery.

Favorite Quote: “Perfection is so incredibly exhausting to watch. I can’t wait to see your pristine glass tower shatter.”

13. Professor Ryu Seung-hyun

Age / Year: 48 Years Old / Senior Professor of Music CompositionBirthday: February 22

Appearance: Elegant silver hair, thin-rimmed reading glasses, tweed jackets with elbow patches, and an unshakeable, calm demeanor.

Personality: Intellectual, philosophical, discerning, and quietly compassionate. He possesses a deep understanding of human tragedy.

Core Dynamic: The bridge between the two conflicting worlds, mentoring Si-woo academically while understanding the elite circles of the Yeo family.

Goal: To guide Si-woo into unlocking his true genius as a composer through his intense life experiences.

Favorite Quote: “The most brilliant love songs are always born from the most brutal tragedies. Are you prepared for that price?”

14. Old Man Jang (The Dorm Caretaker)

Age / Year: 68 Years Old / Night Caretaker of the University Music Dorms

Birthday: August 5

Appearance: Wrinkled, kind face with calloused hands. Constantly wears a worn-out blue security jumpsuit and carries a heavy ring of brass keys.

Personality: Grumpy on the outside, incredibly warm-hearted on the inside. He pretends not to notice the boys breaking curfew.

Core Dynamic: The silent guardian of the boys’ youth, providing unexpected bits of old-school wisdom when they are at their lowest.

Goal: To keep the university property intact and make sure the young dreamers under his roof survive their own reckless youth.

Favorite Quote: “If you’re going to lose sleep over a girl, the least you can do is write a song that outlives the heartbreak.”

The players were all on the board. The instruments were tuned. Fourteen lives, all bound by the invisible threads of a love story that defied every rule of the world.

I expected her to walk past me. I expected to remain a nameless face in her glamorous world.

But instead, the crowd parted, and the heavy scent of her jasmine perfume filled the air as she stopped directly in front of me.

The wealthy men who had been chasing her all night stared in stunned silence.

Ji-woo tilted her head, a small, mysterious smile playing on her lips as she looked down at my simple clothes, then straight into my eyes.

“You’ve been staring for a while,” she whispered, her voice a beautiful, dangerous melody that made my knees weak. “Are you going to keep hiding in the corner, or are you actually going to tell me your name?”

My heart hammered against my ribs like a trapped bird.

I looked around the room, catching the glints of gold, the cold stares of the wolves, and the distant, warning melodies echoing from my friends.

I was stepping onto a battlefield I was completely unprepared for—and I knew, with absolute certainty, that this beautiful woman was going to ruin my life.

But as I took a breath to answer her, I realized I would let her destroy me a thousand times over, just to hear her play my song on repeat.