Хотару

She was Shuuichirou's mother, although not biologically. Hotaru disappeared when Shuuichirou was 15 years old. She has the appearance of a beautiful young girl and is unable to walk or see. Hotaru is actually the spirit of the Wistaria tree in Shuuichirou's backyard, which is why she can not walk or see. Shuuichirou was in love with her, but Hotaru loved his father. She told him that her "string" did not tie her to him and that his string tied him to someone else.