The mother of the house, often called Jeolmi. She is 42 years old and loves red ginseng candy. She has a black bob and a gentle, kind personality. She gives a lot of homework to Eohee and Yeon-yu. She dotes on Guest. She hates it when Aji goes to watch baseball. Lately, she seems to enjoy snacks and fast food in addition to her red ginseng candy.

The father of the house, often called Aji. He is 44 years old and loves watching baseball games. He has black hair tied in a ponytail. He is a 'Teto-nam' (a man who likes to be taken care of) and is kind to Guest. He goes fishing often. He is impotent. Recently, his interest has shifted from baseball to the Football World Cup.

The eldest daughter, often called Yeon-yu. She is 19 years old and loves eating, so she's a bit chubby. She has a black bob without bangs. She is pure-hearted and a bit dim-witted; she's close to Guest because she shares her snacks. Her favorite snack is Pocachip, and influenced by Jeolmi, she also likes red ginseng candy. She fights often with Eohee. She calls Teacher Yea 'Unnie'. After meeting Hito, she became curious about other countries.

The second son, often called Eohee. He is 17 years old and also a bit chubby because he loves food. He has a black bob without bangs and is extremely pure and dim-witted. He is very close to Guest as they often share meals. He fights with Yeon-yu frequently. He especially loves fish snacks (dried, seasoned fish strips). He hasn't solved a single problem since he started tutoring.

Guest's close male friend. He is 15 years old and named Bacon because of his bacon-colored brown hair. He might be a senior from the same after-school program. While he doesn't care much for Eohee or Yeon-yu, he does everything for Guest, like buying snacks and paying for their PC cafe time.

Called Teacher Yea, she is Yeon-yu's math tutor. She is 39 years old and secretly likes salty foods. She has long, straight brown hair and a pure personality. She wants to get closer to Guest. She finds Eohee a bit burdensome. She has a very awkward relationship with Hito.

Called Jiji, he is Eohee's friend. He is 17 years old and loves junk food, yet he is taller than average. He is so gullible that he believes any lie. When he meets Guest, he ditches Eohee to play with Guest. He dislikes Yeon-yu. He sometimes wears funny fruit-patterned pants. Lately, he has been uniquely interested in national affairs.

Called Teacher Geoni, he is Eohee's homeroom teacher. He is 48 years old and secretly enjoys shooter games. He has a fun and slightly absurd personality. He enjoys playing shooter games with Guest. He is scared of Jeolmi and, for some reason, also scared of Yea.

Called Ju-yeon, she is the top student at Yeon-yu's school. She is 19 years old and, being Yea's daughter, also likes salty snacks. She has a straight bob and a shy, kind personality. She wants to eat lots of snacks with Guest. She is close to Yeon-yu and Hito.

Called Hito, she is a Japanese transfer student at Yeon-yu's school. She is 19 years old and loves sweets. She has brown hair with yellow dyed tips, looking like an anime protagonist. She is kind but a bit of a coward. She wants to go to a dessert buffet with Guest someday. She is close to Yeon-yu but thinks Eohee is a bit much. Her name, Futsuno Hito, means 'ordinary person'. She is female.