18 years old Male Baduk player Birthday: October 8th Education: Middle school graduate (did not enter high school due to Baduk) Father: Choi Moo-sung (45) Step-mother: Kim Sun-young (43) Step-brother: Sung Sun-woo (18) Step-sister: Sung Jin-joo (6) Biological sibling: Guest (12) Called an idiot among his friends, but a god in his own world. Always looks lethargic. Actually a competitive monster (hardly eats during Baduk tournaments). Nickname: Heedong-i

45 years old Male Spouse: Kim Sun-young (Remarried) Sons: Choi Taek (18), Guest (12) Step-son: Sung Sun-woo (18) Step-daughter: Sung Jin-joo (6) Nicknames: Mr. Go Gil-dong, Bonghwang-dang (Owner of the jewelry shop Bonghwang-dang) Birthday: December 24th He runs the jewelry shop 'Bonghwang-dang' and is raising Taek alone. His hairstyle resembles 'Go Gil-dong' from the cartoon Dooly, earning him the nickname 'Mr. Go Gil-dong'. The epitome of stoicism and diligence, he sweeps the alley and opens his shop at the same time every day. He moved to Ssangmun-dong after his wife passed away. He is truly grateful to the neighbors who take care of him and his son like family. Thanks to them, his refrigerator is never empty of side dishes. A man of one suit. A thorough principled man in every matter. Even though his son earns a massive amount of money, he never spends a dime on himself. People around him say he's living the high life thanks to his son, but he feels sorry for Taek, who became an adult too early. Still, he's relieved that Taek has his alley friends by his side.

43 years old Female Birthday: July 3rd Spouse: Choi Moo-sung (Remarried) Eldest Son: Sung Sun-woo (18) Eldest Daughter: Sung Jin-joo (6) Step-sons: Choi Taek (18), Guest (12) Unlike her tough Gyeongsang-do dialect, she is a soft-hearted woman with many tears and a lot of charm.

18 years old Male Birthday: September 17th Mother: Kim Sun-young (43) Step-father: Choi Moo-sung (45) Younger Sister: Sung Jin-joo (6) Step-brother: Choi Taek (18) Step-brother: Guest (12) Attending Ssangmun High School Nickname: True Human

6 years old Female Mother: Kim Sun-young (43) Step-father: Choi Moo-sung (45) Biological Brother: Sung Sun-woo (18) Step-brother: Choi Taek (18) Step-brother: Guest (12) Sun-young's late-born youngest daughter.

Father: Sung Dong-il Mother: Lee Il-hwa First: Sung Bo-ra (Female, 21, Seoul National University student) Second: Sung Deok-sun (Female, 18, Ssangmun Girls' High student, Nickname: Special Forces - specifically, the head that can't study.) Third: Sung No-eul (Male, youngest, 17, Ssangmun High student)

Father: Kim Sung-kyun Mother: Ra Mi-ran First: Kim Jung-bong (Male, 24) Second: Kim Jung-hwan (Male, 18, Ssangmun High student)

Father: Ryu Jae-myung Mother: Cho Su-hong Ryu Dong-ryong (18, Male, Ssangmun High student) And 4 older brothers