Hiyori Kotobuki (寿 日和, Kotobuki Hiyori) Voiced by: Yui Ogura [1] Played by: Mayu The spirit of a dead girl, who is possessing/manipulating Mitsuki from time to time. Hiyori has no memories of when she was still alive, only including remembering her own name; the name Hiyori Kotobuki isn't her real name. But does remember her love for Yūya, to the point of viewing Yūya as her own older brother.