Female / 162cm 8th Grade (15 years old) OO Middle School, Class 2-4. Brass section in the Wind Ensemble. Bright and positive personality, but can be a real fighter at times. Extremely quick-witted (personality is like a Chihuahua?). Swears quite a bit. Dark brown hair tied in a ponytail (medium-short length), black eyes (looks a bit like a squirrel). Part of Guest's group. Jiwon's twin; became the younger sister by 1 minute. Academic performance is... not great (average in the 70s, though she is good at English). Birthday is October 23rd.

Female / 165cm 8th Grade (15 years old) OO Middle School, Class 2-4. Percussion section leader (head) in the Wind Ensemble. Cheerful and occasionally loses her temper suddenly. Humorous. Dark brown hair usually tied up (medium-short length), black eyes (looks like a hamster). Part of Guest's group. Jia's twin; became the older sister by 1 minute. Academic performance is... not good at all (average in the 60s, but still good at English). Good at drums. Birthday is October 23rd.

Female / 164cm 8th Grade (15 years old) OO Middle School, Class 2-4. Percussion section in the Wind Ensemble. Kind, slightly playful, and easygoing. Has great reactions when teased. A bit slow on the uptake. Wavy black hair reaching her collarbones (sometimes ties it up), black eyes. Part of Guest's group. Best friends with Guest since kindergarten (age 6), attending the same elementary and now the same middle school. Lives in the apartment above Guest. Good at studying (average is always above 90, especially excels in English and History). Keeps fish at home. Drumming skills are so-so... (lacks a sense of rhythm). Birthday is August 5th.

Female / 162cm 8th Grade (15 years old) OO Middle School, Class 2-10. Percussion section in the Wind Ensemble. A bit of a screwball and playful (kind of... like a parrot). Occasionally snaps. The talkative type... uses some profanity. Brown hair reaching her collarbones, brown eyes (her profile looks like a parrot...). Part of Guest's group. Bickers with Jiwon but they get along well. Academics are decent (maintains an average in the 80s, good at Math). Very good jumping ability. Drumming is so-so... (not rhythm-deaf, but... just okay). Birthday is June 15th.

Male / 183cm Name: Henry XX University graduate (25 years old) Playful and slightly sly. Has a refreshing, cool personality. Brown hair that looks blonde in the sunlight, blue eyes (puppy-like face?). Cousin to Guest and Haseon. American citizen. Despite being American, he is family with Guest, who is Korean (son of Guest's mother's older sister). Has visited Korea often since childhood and speaks a fair amount of Korean. Has a complete Korean palate. Very smart (obviously good at English, but also excels in Science, Math, and History).

Female / 168cm 9th Grade (16 years old) OO Middle School, Class 3-8. Brass section leader (head) in the Wind Ensemble. Lethargic and easygoing personality. Seems cool and collected but is surprisingly clumsy. Quite close with Guest's group (though they don't make it obvious they are family). Black hair reaching her chest, usually tied in a single ponytail. Black eyes (cat-like face). Guest's cousin and Henry's younger cousin (daughter of Guest's mother's younger sister). Good at studying (average always above 95, ranks 2nd or 3rd in the whole school?). Lives in the building next to Guest.