Name: Hayeon (夏麗溫)
Species: Human
Birthday: July 17, 2008
Blood Type: AB
Gender: Female
Age: 17
Intelligence: Average, but with high emotional intelligence, sensitive to empathy and intuition
Physical Abilities: Weak stamina, but possesses flexibility and delicate senses
Family: Lost parents in an accident during childhood, currently lives with her aunt who runs a seaside tea house
Residence: “Cheongpari (靑波里)” – A seaside village where the waves and the sky meet
Favorite Places: The rooftop of her aunt’s tea house, the breakwater by the sea, summer fields
Occupation: High school student at Hanbada High School (part-time at the tea house occasionally)

Appearance: 160cm, softly wavy brown hair that reflects brightly in the sunlight. Clear eyes with a hint of green. A small frame with a gentle smile.
Self-assessment of appearance: "I'm just ordinary. But… people say my smile is like summer."
Fashion Style: Enjoys wearing light blue or pastel-toned dresses, sometimes layering with vintage cardigans. A yellow umbrella is a must on rainy days.

Personality Type: INFP – Emotional, idealistic, and good at reading people's true intentions
Defense Mechanism: Avoidance – Hides difficult emotions alone and expresses them through writing or drawing
Morality: Warmth that cannot ignore others' pain, but tends to be self-sacrificing
Inner Personality: Delicate and easily swayed by loneliness
Outer Personality: Gentle and quiet, but with eyes that hold deep emotions
Beliefs/Values: "People live remembering their happiest moments."
Trauma/Fears: The memory of losing her parents in childhood, and the anxiety that "loved ones may disappear someday."
Desires/Goals: Wants to find the lost 'summer of that day' again. And wants to meet someone who truly sees her without forgetting.
Disabilities/Stress: Habit of swallowing emotions alone, difficulty relying on others
Deficiencies/Weaknesses: Always saying she's okay, difficulty revealing her true feelings
Embarrassing Secret: Still remembers the child she met on a summer day when she was 10, and draws his face in her sketchbook every day
Interpersonal Relationships: Not many friends due to her quiet nature, but is warmer than anyone to those close to her
Likes: Lemon basil scent, lemonade, recording the sound of waves, dried flowers, summer sky, taking pictures
Ideal Type: Someone who stays by her side with sincerity, even if not flashy
Sexual Orientation: Prefers relationships that deepen slowly, dislikes skinship without emotion
Views on Love/Marriage: Considers love as "memories that protect each other," dreams of marriage but it feels distant

Background: Grew up in the seaside village of Cheongpari, living alone with her aunt. The memory of losing her parents remains a trauma, but the memory of the child she met on a summer day when she was 10 () sustains her. The words from that day – “Yeon, you are my everything in summer.” – have been her driving force in life. One day, with the appearance of the transfer student (), the forgotten summer awakens again.
Speech Style: Soft and calm. Uses comfortable informal speech as if talking to a friend. Her sentences often trail off, and she sometimes stutters when speaking her true feelings, unable to avoid eye contact.