Baekje

Gender: Female Age: 2044 years old Height: 172cm Appearance: Blonde hair and gold eyes. She usually wears a traditional cap called a gwanmo. However, South Korea made her change into comfortable clothes here too because she stood out. Personality: Like a rich young lady? Cheerful and a bit of a pushover. TMI One of the three siblings with Silla and Goguryeo (she's the youngest). The one who got backstabbed by Silla. If Silla talks about unifying the three kingdoms in front of her, she and Goguryeo beat her up together ; A major social butterfly ☆ Goryeo likes her because they get along well (honestly, it might also be because Goryeo destroyed Silla). She at least calls Silla 'Eonni', but she calls Goguryeo by his name.

Silla

Gender: Female Age: 2083 years old Height: 171cm Appearance: Blue hair and sky-blue eyes. She wears a hanbok, but South Korea made her change into comfortable clothes because she stood out. Personality: Quick-witted and opportunistic. She loves luxury and is a bit prickly. TMI One of the three siblings with Baekje and Goguryeo (she's the eldest). She always gets beaten up for talking about unifying the three kingdoms in front of Baekje and Goguryeo. By the way, she's used to getting beaten up ;; (Just how much has she been hit?)

Gaya

Gender: Male Age: 2068 years old Height: 168cm Appearance: White hair and black eyes (similar to Balhae). Personality: A bit timid, but obsessed with money. He turns into a merchant the moment he sees cash ;; but he's emotionally fragile ;; TMI He has very little presence 😭😭 For some reason, he gets beaten up by Baekje, Silla, and Goguryeo even when he hasn't done anything. He's good at working with iron. In history, this guy was destroyed by Silla (he's truly pitiful 😭😭).

Balhae

Gender: Male Age: 1328 years old Height: 198cm (Why are you so tall?) Appearance: White hair and black eyes. Personality: Taciturn, cold, and rational. TMI He's secretly proud of being Goguryeo's son. Goryeo's older brother (siblings). Fortunately, he gets along well with Goryeo.

Goryeo

Gender: Female Age: 1108 years old Height: 178cm Appearance: Yellow hair and gold eyes. She usually wears a Goryeo-style hanbok, but South Korea made her change into comfortable clothes lol. Personality: Cheerful, active, calm, and bright? TMI Joseon's mother (but they don't look alike). Balhae's younger sister (but they don't look alike either). Goguryeo's daughter (but they don't look alike at all). Even though she's a woman, she calls Balhae 'Hyeong-nim'. She calls Joseon her son (well, because he is). She looks younger than Joseon, but surprisingly, she is Joseon's mother.

Joseon

Gender: Male Age: 634 years old Height: 177cm Appearance: Red hair and gold eyes. He wears a gat and dopo, or sometimes a gonryongpo. But now, South Korea has him in comfortable clothes because he stood out lol. Personality: Moralistic and likely the most polite one here. He's very strict. TMI A very extreme Confucian boy (the national religion was Confucianism after all ;). A massive record-keeping nerd. Korean Empire's father. While all the other family members are fighting, he studies by himself ; He's not the oldest, but he seems like the biggest 'kkondae' (old-fashioned/preachy). Very polite to his elders. Uses the 'hao-che' speech style. Known for being polite (uses formal speech with Baekje, Silla, Goguryeo, Balhae, Goryeo, and Gaya). He uses 'hao-che' with the rest (North Korea, South Korea, Korean Empire).

South Korea

Gender: Female Age: 78 years old Height: 170cm Appearance: White hair with red and blue heterochromia. Wears a hoodie and jeans. If she dresses the same as the Korean Empire, they look so identical you can't tell them apart ㄷㄷ (their personalities are different though). Personality: Realistic, tsundere, active?, calm? TMI Can't live without her phone ㄷㄷ Unfortunately, she takes after the Korean Empire and loves coffee. Has a terrible relationship with North Korea. The youngest. Loves self-propelled howitzers (her search history is nothing but howitzers). She listens to the Korean Empire fairly well (a dutiful daughter).

North Korea

Gender: Male Age: 78 years old Height: 173cm Appearance: Blue hair and red eyes. Wears something like a military uniform or a formal uniform. Personality: Foul-mouthed and rude, but a tsundere who uses formal speech with elders. Cute? maybe? (Actually, not cute at all). TMI Loves nuclear bombs so much he even has a nuke-shaped plushie ;; South Korea's younger brother. Has a terrible relationship with South Korea. The youngest. He listens to the Korean Empire fairly well (a dutiful son).