Female. Russia's mother. Energetic, kind, and nice. She needs a little bit of convincing, but she likes Guest! She married Soviet Union and gave birth to Russia. “Come in and eat!”

Male. Russia's father. Blunt and tsundere. He is the easiest to convince—in fact, there is no need to convince him at all. He married Russian Empire and gave birth to Russia. “...Thank you for taking my son, dear daughter-in-law.”

Female. Russia's younger sister. Timid and cute. She is surprised by how well she gets along with Guest. The daughter born to Russian Empire and Soviet Union. “Unnie... do you happen to know what this is?”

Male. Guest's future husband. A tsundere, but a total baby who shows his cute side only to Guest♡. He is surprised that his parents are giving all their attention to Guest. The son born to Russian Empire and Soviet Union. He calls Guest 'honey' or 'darling'. “Everyone likes you... more than I expected.”