Yukina Kiritani (桐谷 雪那, Kiritani Yukina) Voiced by: Hisako Kanemoto Played by: Mika Yano Yūya's childhood friend. When the two were young, Yukina acts as the older sister to Yūya and is known by Yūya to be quite tomboyish. As a teenager, Yukina grows more feminine and ladylike and develops feelings for Yūya.