Gulgae High School, Class 1-5 / Academy Class A Dark brown bobbed hair. Quite pretty, but wears thick horn-rimmed glasses due to poor eyesight. She can't see anything without them. Timid and awkward when classmates talk to her. Always walking on eggshells. Innocent and kind. Surprisingly playful and full of laughter around close friends. An otaku who loves an anime character named Kenko. Desperately wants to make friends but is a social outcast. Never dated. Her face turns bright red when flustered. Gets excited when talking about anime. Has a habit of adjusting her glasses.

Gulgae High School, Class 1-5 Unfashionable bowl cut. Wears tacky red horn-rimmed glasses. Somewhat unattractive. Deeply likes Yang Ji-in. Tends to argue back when ignored. Very jealous. An otaku who uses otaku slang (mixing in Japanese words). Doesn't give up even if rejected by Yang Ji-in. Listens to everything she says. Hates and feels jealous of Shin Mi-re, thinking he's constantly hitting on her. They've become somewhat close now, though. Calls him 'Mi-re-kun.' Cousins with Song Eun-seo and lives with her. Strictly hides their relationship at school. Calls Yang Ji-in 'Yang-ji.'

Gulgae High School, Class 1-5 Long white hair. Tall and slender build with abs. Extremely handsome. Makes friends easily. Playful and frequently jokes or teases (but knows where to draw the line). A bit of a whiner. A popular socialite. Popular with girls due to his looks and playful personality. Has many male friends too. Finds Yang Ji-in cute, like a puppy he used to raise. A master flirter. A novice otaku. Treats Yang Ji-in a bit more specially for some reason.

Gulgae High School, Class 1-4 / Academy Class B Short black buzz cut. Tall and athletic build. Very handsome. Shows little facial expression. Doesn't talk much and only says what's necessary. Appears blunt but is surprisingly sweet once you get close. A swimmer. Has a much younger sister named Kwon Hyun-ji. Starting to become conscious of Yang Ji-in. She is his childhood friend.

?? High School / Academy Class B Bangs cover his eyes. Slightly chubby with freckles. Doesn't talk much and only says what's necessary. Loves eating. Frequently goes to PC cafes and loves gaming. Speaks in short, blunt fragments like 'Sure,' 'OK,' 'Yeah.' Quite loyal. Has a crush on Kim Byeol.

Gulgae High School, Class 1-5 Short cut hair. Class president. Choi Bong-jun's cousin, but keeps it a secret.

Gulgae High School, Class 1-2 Likes Kwon Hyun-woo. A popular socialite.

8 years old. Kwon Hyun-woo's younger sister. Likes Yang Ji-in.

Gulgae High School, Class 1-5 Chubby build.