Seo Yujin (서유진)

Korean

​Role: Main Deuteragonist / Wildcard Intelligence Operative/ Second year student.

​Special Ability & Skills: Probability & Information Gathering:

Yujin possesses extensive prior knowledge regarding the shadow outbreak, monster behaviors, and secret organizations. She uses sharp analytical intellect and strategic risk calculation to manipulate outcomes and navigate life-or-death scenarios with lethal efficiency.

She's a lesbian.

​Appearance:

​She has long, flowing black hair with bangs.

Striking sparkling red eyes that give her a cool, calculating look.

She has a barcode on beneath her shoulder.

She has red ball-shaped earrings in both ears.

​5'5(1.65 cm), average height, highly agile build with an effortlessly relaxed yet dangerous posture.She's slim.

She's beautiful and pretty.

She's a superhuman/desire-ability user.

Casual uniform look featuring an oversized red, white, and black color-blocked jacket with the striped lines will be on each shoulder, and the lower part will be the side lines, worn loose over the uniform base.

Uniform/Layers: Dark navy V-neck sweater vest, light blue collared shirt, and a blue/white striped tie.

Bottom: Dark grey pencil miniskirt.

​Personality:

Yujin stands out with her fun, goofy, bright, talkative, outgoing personality, but also some hidden secrets. Besides that, she's protective and very caring towards Areum since the apocalypse started. She's clingy towards her and worries about her. She often says she doesn't have to sacrifice herself for others to Areum.

She is a human espresso shot with zero restraint—a high-energy, dangerously charming extrovert who navigates life with an endless grin and a razor-sharp, sarcastic edge. Overflowing with chaotic playfulness, she treats every room as her personal stage and every conversation as a ping-pong match where she always gets the last hit. While her upbeat enthusiasm and dramatic banter make her instantly magnetic, her humor is laced with just enough dry, playful teasing to keep everyone on their toes.

Whenever Areum is in her line of sight, her already sky-high energy instantly dials up to a blinding, absurd frequency. She transforms into a total clingy menace, physically attaching herself to Areum’s side like an overly enthusiastic koala through, casual physical contact—arm-hooking, sudden back-hugs, or dramatic head-rests.But the moment anyone so much as mildly threatens Areum's peace, her sarcastic humor flips into a protective one.

She loves her silly friend group – Areum, Yeonu, and Gyeoul. She loves them all and is best friends with them.

She loves eating red cherry lollipops.

Blood type: type B. She's an ESTP.

She likes fun things.

Dislikes not so fun things.

She isn’t afraid of ocean, but dislikes it.

She has feelings towards Areum romantically, she loves her so much.

Ji Yeonu (지연우)

Korean

Role / Status: Core Main Cast / Survivor Support / / Special Ability / Defensive Support & Evolving Survival Skills

Affiliation: Seonwa High School Survivor Group

Appearance & Design:

Long height, broad shoulders and muscles, with short messy blonde hair and bright golden eyes, beneath his left eye there's a small mole.6'0(1.82 cm)

He wears a light gray zip-up hoodie over a dark turtle-neck shirt paired with dark, slim-fit trousers, underneath the hoodie, there's white school blazer, a dark navy V-neck sweater layer worn over a light blue dress shirt with a blue-and-white striped tie.

Typical high school student aesthetic that gradually grows more rugged as the outbreak progresses.

Personality & Character Arc:

Anxious yet Determined: Begins as a cautious, easily terrified student who rapidly develops a strong moral backbone.

Growth & Support: Evolves into a dependable team member who steps up to protect others during critical ambushes.

Energy & Playful: He's literally a golden-retriever.He's warm, filled with energy and silly behavior.He trusts his friends most and respects to the person that saved him in the fire when he was young.He's cheerful and a goof besides with Yujin.

He trusts his gang completely.He's besties with Areum, Yujin and Gyeoul.

He's a second year.

​Blood Type: Type B

​MBTI: ENFP

Bisexual.

​Likes: Sports, singing/music

​Dislikes: Injustice

Han Gyeoul (한겨울)

Korean

Role / Status: Main Deuteragonist / Frontline Combatant

Special Ability: Peak Physical Conditioning / Tactical Combat Expertise

Appearance & Design:

Tall, lean, and athletic build with broad shoulders.6'1(1.86 cm)

Uniform: Standard male uniform featuring a white single-breasted blazer with light blue piping along the lapels and pocket flaps.

​Layers: A dark navy V-neck sweater layer worn over a light blue dress shirt with a blue-and-white striped tie.

​Bottom: Tailored dark trousers.

Neat,short black hair with bangs and striking, deep purple/violet eyes.

Maintains a clean, sharp appearance, transitioning from school blazer to practical combat apparel.

Personality & Character Arc:

Intelligence and thoughtfulness: He's smart and class president who's top one.He thoughts everyone's safety and keeps gentleness in his behavior.

Kindness & Warmth: Polite and gentle, he can be determined.He loves his friends and family.

He's a second year.

​Blood Type: Type AB

​MBTI: ESTJ

Bisexual

​Likes: Reading, sports / exercise

​Dislikes: People who can't be reasoned with / uncommunicative people