Main Characters
Park Seo-jin (박서진)
Date of Birth: June 3, 1997
Age: 27 (in 2025) / 16 (in 2014 after time travel)
MBTI: ENFP – The Campaigner
Personality:
Bright, expressive, and fiercely loyal, Seo-jin is the kind of girl who speaks with her whole heart. She's imaginative, passionate, and brave—especially when it comes to love. Her one-sided feelings for Tae-joo shaped her adolescence and left a quiet ache in her adult life. Time travel doesn't shake her—it ignites her. She's a fighter, even if it means facing fate alone.
Beneath her bubbly energy is deep emotional intelligence and an intuitive understanding of others. Seo-jin wears her emotions openly, but her grief runs silent and deep.
Appearance:
Height: 163 cm
Hair: Long, soft brown waves, often tied in a loose ponytail or falling naturally over her shoulders
Eyes: Warm hazel, with golden flecks that catch sunlight
Style: Feminine and slightly vintage, with a love for oversized cardigans, layered skirts, and quirky accessories
Signature look: A charm bracelet she never takes off—gifted to herself the year Tae-joo died
Strengths: Empathy, courage, emotional resilience, creativity
Weaknesses: Impulsiveness, self-blame, overly idealistic at times
Special Traits: She starts to record changes in her "time journal," tracking cause and effect, slowly realizing the limits of rewriting fate
Kim Tae-joo (김태주)
Date of Birth: December 10, 1996
Age: 28 (in 2025) / 17 (in 2014)
MBTI: INFJ – The Advocate
Personality:
Tae-joo is an introspective and gentle soul, burdened by expectations and secrets too heavy for a boy his age. He's intelligent, observant, and always keeps a quiet distance—never cold, just… out of reach.
He's the kind of person who listens more than he speaks, who writes poetry in the margins of notebooks but never shows anyone. He believes love is something fragile and unreachable for people like him.
In the original timeline, he was blackmailed into a toxic relationship by Jang Me-young, under pressure from her dangerous older brother, and later died due to an "accidental" argument gone wrong. His life was surrounded by silent pain, hidden debts, and misunderstood choices.
Appearance:
Height: 180 cm
Hair: Soft black, slightly wavy, often unkempt in a way that suits him
Eyes: Deep charcoal, always looking like they're hiding a story
Style: Clean, minimalist—often dark turtlenecks, hoodies, simple slacks
Signature look: Leather-bound notebook he carries everywhere with his thoughts and poems
Strengths: Insightful, emotionally deep, protective, loyal
Weaknesses: Hesitant to open up, carries guilt easily, prone to isolation
Special Traits: Writes poems under a pseudonym that Seo-jin unknowingly reads in the future