Kasumi Saegusa - 七草香澄

Older of the Saegusa twins and [Mayumi](https://anilist.co/character/88194/Mayumi-Saegusa)'s younger sister. She is a tomboy and could be considered a polar opposite in terms of personality when compared to her twin, Izumi. She was initially suspicious of [Tatsuya](https://anilist.co/character/55743/Tatsuya-Shiba) but has grown to respect him.