Yukiho Kousaka  

, 高坂 雪穂

Yukiho frequently appears doing humiliating acts when alone. Although she consistently scolds her older sister, it's evident that Yukiho genuinely cares for her. She is unique in being Honoka Kousaka's younger sister. Furthermore, the anime depicts a strong bond between Yukiho and Ayase Arisa, who is Eris Ayase's little sister.