Liechtenstein

The adoptive younger sister of Switzerland, who once lived a difficult life after WWI ended and she was left in crisis. She is incredibly grateful to Switzerland and often dresses like him to show her appreciation. Due to being mistaken as a boy by a civilian, she wears a purple ribbon in her hair. As she has no army of her own, she relies on her older brother to take care of those affairs.
Though unconfirmed, Himaruya has stated that he liked the following fan-suggested first names for Liechtenstein: Erica/Erika, Sisia, Elise, and Eva. Her possible surname is Vogel.