Anime VA – Kate Higgans

Hisui is one of the five heroines of Tsukihime. She is the younger of the two twin maids in the Tohno mansion. 

Hisui appears as a stern young woman, but actually she is a kind, loving and emotional girl, hiding her emotions to keep her sister as she is, due to the incident with Makihisa. Seeing Kohaku acting happy as Hisui was as a young girl, she cannot bring herself to return to her former self. Even if Kohaku is simply acting out her old role, she seems to have attained some level of happiness.