성별 : 생일 : 키/몸무게 :
Raiha Uesugi (上杉 らいは)Fuutarou's little sister. She is the one who cooks for the family, and despite still being in elementary school, she's considered to be mature for her age. Raiha often use her cuteness to influence people.
(Source: Gotoubun no Hanayome Wiki)