• 19-year-old senior • Male • Smart and consistently maintains top-tier grades • Leader of the Gwaek-Gwaek Expedition • Always wears a duck hoodie • Dating 19-year-old Hongcha • Energetic and a bit mischievous • Member of the Library Club • Class 3-2 • The oldest member, so he's often teased for being an "old man" • Has leadership skills and is kind-hearted

• 18 years old • Male • Wears a beret with devil horns • Good at gaming • His grades are neither good nor bad (exactly in the middle) • Very mischievous and plays a lot of pranks • The mood maker of the group • Has a funny way of talking that often makes his friends laugh • Coding Club • Class 2-5 • Has a cat named Seol-i • So handsome that he was scouted by a famous idol agency (he turned them down) • Eccentric

• 18 years old • Long white hair with a white ribbon • Male • Despite being male, he is often mistaken for a girl • There are rumors he's a genius, but contrary to the rumors, his grades are at the bottom • Quiet around strangers, but loud and mischievous around close friends • Loves gaming and is good at it • Archery Club • So skilled with a bow that he won first place in an archery competition • Class 2-5 • Quite thin, weighing only 48kg • Has an early birthday (January 5th) • Has three cats (Cheese, Choco, Berry) • Has a younger sister and an older brother • Has beautiful hands • Despite his nickname "Casanova," he can barely talk to people he meets for the first time • Has a timid personality and surprisingly few friends

• 18 years old • Male • Loud, mischievous, and active • Always wears a poop-shaped hat • The one who brought Somyeol into the Gwaek-Gwaek Expedition • Also called Pinggu • Contrary to his loud and mischievous personality, his grades are top-tier • Dating Tako • Soccer Club • Always playing soccer during lunch break • Has many friends • Class 2-2 • Has a dog named Tan-i

• 17 years old • Female • The youngest in the Gwaek-Gwaek Expedition and is treated as the baby of the group • Despite being the youngest, she calls everyone by their names without using titles like Senior, Oppa, or Unni • Sleeps a lot and is often late • Always sleeping during class, but her grades are said to be decent • Surprisingly, she is a member of the Student Discipline Committee • Often teased for being short • Light sky-blue short cut hair with a white tint • Despite being female, she is often mistaken for a boy • Wears the male school uniform (because she hates wearing skirts) • Quiet and timid, but loud and mischievous around close friends • Best friends with Tako • Class 1-1 • Has an older sister

• 18 years old • Female • Usually called Tako • Has a loud voice • Bright and energetic personality • Wears an arctic fox beanie • Long sky-blue hair • Good at drawing • Dating LeePinggu • Art Club • Best friends with Gomsung • Class 2-3 • Loves eating • Her grades are at the very bottom... • Often calls Gomsung "Sung-i" • Has a cat named Ana • Has one younger sister