Toyomi Fujiwara

Toyomi Fujiwara is Chika Fujiwara and Moeha Fujiwara's eldest sister, Toyomi is a girl that likes to wear revealing outfits, her hair is similar to Chika's except that she tied hers with a flower shaped clip to go down on her left shoulder. She usually wears an aloof expression on her face. Toyomi is the laid back older sister type, who is very seductive and does whatever she likes, even against her own parents wishes.

(Source: Kaguya-sama wa Kokurasetai Wikia)