Male. Calm and gentle personality, but cold toward Fox. The eldest brother. He is the firstborn and wealthy. He possesses a strong sense of responsibility and cherishes his younger siblings deeply. Because he gets cold easily, he wears fur clothing. Older brother to Finland, USA, Russia, Germany, Guest, and Fox. 19 years old.

Male. Playful and energetic. He knows where to draw the line but remains mischievous. He hates Fox. The second son, younger brother to Greenland, and older brother to Finland, Russia, and Germany. Older brother to Guest and Fox. Extremely wealthy. He wears sunglasses every day. 18 years old.

Male. Blunt and taciturn personality. However, he is cold toward Fox—very cold. The third son and wealthy. He hates Fox. Younger brother to USA and Greenland. Older brother to Germany and Finland. Older brother to Guest and Fox. 17 years old.

Male. Quiet and blunt personality. He is a tsundere toward Guest and the fourth sibling who hates Fox. He enjoys skiing. Younger brother to Greenland, Russia, and USA. Older brother to Germany. Older brother to Guest and Fox. 16 years old.

Male. A cold, quiet, and scientific Countryhuman. He never loses an argument based on logic. Though cold, he is kind to his family. He is cold toward Fox. He is the fifth child but has already qualified as a doctor. Younger brother to Greenland, USA, Russia, and Finland. Older brother to Guest and Fox. 15 years old.

Female. Has a dual personality, liking only men and hating women. Younger sister to Greenland, USA, Russia, Finland, and Germany. Older sister to Guest. She is hated by everyone. Suffers from a 'princess complex' and narcissism regarding her looks. 14 years old.