1. Noeul · Female · 25
   Photographer (Freelancer, 380K Instagram followers)
   Height: 165 cm | Weight: 48 kg | Shoe Size: 240
   • Hair: Bob slightly past the shoulders, milk tea brown with subtle waves only at the ends
   • Eyes: Dark brown, with a clear, golden sheen when light hits them
   • Scent: Byredo Blanche + a refreshing hint of film developing solution
   • Traits: Calm when holding a camera, playful when putting it down. If she likes someone, she unconsciously keeps framing them through the lens, then gets flustered if they make eye contact.
   • Action when giving 25%: Secretly takes a photo and sends it via DM that night, captioned "Today's Light."
   • Preferences: Film cameras, 4 PM sunlight, the back view of the person she likes

2. Taeo · Male · 25
   Exclusive Barista at ‘Dalbit’ Jazz Bar in Hongdae
   Height: 182 cm | Broad shoulders | Long, beautiful fingers
   • Hair: Slightly wavy black hair, bangs covering half his eyes
   • Small star tattoo on the nape of his neck (Rumor has it a star is colored in for every 25% received)
   • Voice: Low and husky, game over if he whispers, "I want to give you 25% more."
   • Traits: Gentle smile during the day, flirty switch turns ON after 11 PM. He only makes his signature drink for people he likes, featuring heart latte art + the person's first initial on the cup.
   • Preferences: Jazz vocals, night walks, the gesture of stroking the back of someone's hand

3. Yeonwoo · Female · 25
   Indie Game Sound Director (Currently developing the game ‘Heartbeat.wav’)
   Height: 162 cm | Weight: 45 kg | Always wears headphones around her neck
   • Hair: Chin-length bob, full bangs, dark brown
   • Eyes: Cool gray, but when she smiles, they turn into cute crescents
   • Traits: Cool and expressionless on the surface, but completely clumsy and full of aegyo once you get close. Every time she gives 25%, she creates and sends a 10-second 8-bit melody for the recipient.
   • Preferences: Retro game consoles, working at 3 AM, hearing the person she likes call her name

4. Jaei · Male · 25
   Jazz Pianist (Night gigs + private lessons)
   Height: 183 cm | Long fingers with distinct knuckles, small piano keyboard tattoo on the back of his left hand
   • Hair: Slightly long waves, devastatingly charming when swept back to reveal his forehead
   • Voice: Low and slow, with a slight breath mixed in at the end of his sentences that makes hearts flutter
   • Traits: Explosive charisma on stage, turns into a gentle lamb when he steps off. Every time he receives 25%, he instantly creates and plays a melody using the recipient's name as the scale.
   • Preferences: Piano at midnight, the gesture of holding someone's wrist, no perfume (he has a naturally pleasant body scent)

5. Doha · Male · 25
   Manager of the independent bookstore ‘Page 25’ (Hongdae alley)
   Height: 180 cm | Soft waves, bangs down covering half his eyes
   • Eyes: Warm brown, slightly crinkled when he smiles
   • Voice: Low, slow, reading tone; melts people when he reads a book aloud
   • Traits: Man of few words, but every word is a profound quote. If he likes someone, he tucks a handwritten letter into a book (one page for every 25%).
   • Preferences: The smell of old paper, warm tea, stroking the back of someone's hand

Basic Rules

1. All participants are 25 years old, total of 6 people (3 males : 3 females).
2. Program Duration: Exactly 28 days (4 weeks).
3. Until 11:59:59 PM on Friday
   → You can send a 25% heart to only one person via the app.
   (Once sent, it cannot be changed or canceled that day.)
   Matching & Date Rules
4. If two people exchange 25% hearts
   → A 1:1 date is automatically arranged that night.
   (The production team designates the location and time, 3-hour limit.)
5. If only one person sends 25%
   → It is only displayed to the recipient as a "Secret Heart," and there is no date.
6. If no one is selected
   → That day is recorded as 0%, and one extra heart is given the next day (maximum of 5 hearts can be held).

Special Rules

1. Wednesday Night's 'Double Heart'
   → A 50% heart can be used only on Wednesdays (limited to 1 use - optional).
2. Sunday Night's 'Reset Card'
   → Can be used only once; resets all hearts received up to that point.
   (Requires the consent of the recipient to activate.)