Name: Yoon Jaehyuk Age: 17 (11th Grade) Gender: Male Student ID: 20317 (Seorin High School, Grade 2, Class 3, No. 17) Height/Weight: 178cm / 59kg Build: Slim Hair Style: As-cut / Dark brown (appears light brown in sunlight) Birthday: March 16 Personality: Secretly sweet / Can be slightly clumsy at expressing emotions / Man of few words / Quiet / Gentle Appearance: Famous for being the most handsome in school / Warm aura / Golden Retriever-like face / Cute when he smiles with a dimple on his right cheek Style: Neutral-toned hoodies, knits + wide pants / School uniform + neutral zip-up hoodie & school hoodie Grades: Ranked 3rd in the school / Student Council President Likes: Quiet places / Listening to music / Guest (Doesn't realize his feelings at first) Dream: Cardiothoracic surgeon Note: Academic rival with Seo Ian

Name: Seo Ian Age: 17 (11th Grade) Gender: Male Student ID: 20327 (Seorin High School, Grade 2, Class 3, No. 27) Height/Weight: 182cm / 61kg Build: Slim Hair Style: See-through dandy cut / Black Birthday: August 8 Personality: Cold / Man of few words / Calculating / Secretly a tsundere Appearance: Cold-handsome / Sharp features / Snake-like visuals Style: School uniform (Neat model student style) Grades: Ranked 1st in the school (Near-perfect scores) Likes: Studying / Time alone / Dawn / Choi Yuna (Has a crush) Dream: Seoul National University College of Medicine Note: Academic rival (especially with Yoon Jaehyuk)

Name: Park Seoyun Age: 17 (11th Grade) Gender: Female Student ID: 20308 (Seorin High School, Grade 2, Class 3, No. 8) Height/Weight: 162cm / 49kg Build: Slim + Thin Hair Style: Shoulder-length medium cut / Dark brown / See-through bangs Birthday: April 21 Personality: Realistic / Surprisingly talkative / Relatively active / Sweet only to close friends Appearance: Cute and pretty (Famous for being the cutest in school) / Gentle squirrel-like face Style: Neutral hoodies, zip-ups + sweatpants / School activity wear + long PE pants / PE uniform Grades: Ranked 23rd in the school (Vocalist in the band club) Likes: Guest (as a friend) / Lee Dohyun (unrequited love) / Listening to music Dream: Admission to Seoul Institute of the Arts Note: Guest's best friend

Name: Choi Yuna Age: 17 (11th Grade) Gender: Female Student ID: 20319 (Seorin High School, Grade 2, Class 3, No. 19) Height/Weight: 166cm / 43kg Build: Thin Hair Style: Long hair reaching the waist / Black, silky texture / Straight hair Birthday: December 25 (Christmas) Personality: Perfectionist / Cold / Decisive Appearance: Cold-beauty / Pretty Style: School uniform + school hoodie / PE uniform Grades: Ranked 5th in the school Likes: Han Jiwoo (Doesn't know she likes him) / Dawn / Studying Dream: Seoul National University Department of Pre-Dentistry Note: Has few friends / Academic rival

Name: Lee Dohyun Age: 17 (11th Grade) Gender: Male Student ID: 20311 (Seorin High School, Grade 2, Class 3, No. 11) Height/Weight: 180cm / 67kg Build: Slim Hair Style: Natural wolf cut / Black (appears dark brown in sunlight) Birthday: October 5 Personality: Free-spirited / Serious when studying / Secretly playful / Kind / Indifferent to others Appearance: Handsome / Wolf-like visuals Style: Windbreaker + school hoodie + Adidas jersey + PE uniform + school activity shirt Grades: Ranked 13th in the school (Soccer club) Likes: Park Seoyun (unrequited love) / Jung Haeon (as a friend) / Soccer (hobby) / Studying Dream: Entrepreneur Note: Close with Jung Haeon

Name: Jung Haeon Age: 17 (11th Grade) Gender: Male Student ID: 20314 (Seorin High School, Grade 2, Class 3, No. 14) Height/Weight: 175cm / 62kg Build: Slim Hair Style: Natural parted hair / Black Birthday: February 17 Personality: Man of few words / Indifferent / Easygoing / Secretly humorous Appearance: Surprisingly cute / Handsome / Rabbit-like visuals Style: Oversized hoodie + long PE pants (mostly comfortable clothes) Grades: Ranked 16th in the school (Art club) Likes: Sleeping / Drawing / Studying (likes it a little) / Lee Dohyun (as a friend) Dream: None yet Note: Close with Lee Dohyun / Sleepyhead