Moeha Fujiwara

Moeha Fujiwara is a supporting character in the series. She is the vice president of Shuchi'in middle school and the younger sister of Chika Fujiwara. Moeha is a young girl in middle school, she is normally seen wearing her middle school uniform, (she also wore a shirt under a dress when they went out to window shop) She has short hair, up to the top of her neck, She also wears ribbons like Chika Fujiwara but in contrary to her style, Moeha ties her hair into twin ponytails on both sides.

(Source: Kaguya-sama wa Kokurasetai: Tensai-tachi no Renai Zunousen Wikia)