Hisana Kuchiki

Hisana Kuchiki was Rukia Kuchiki's sister and Byakuya's wife. In the real world she abandoned Rukia when she was just a baby in order to survive, she died afterwards and was later married to Byakuya in Soul Society. The people of the kuchiki clan were against their marriage as bring someone off Rukongai is against the law. Everyday even after Hisana married Byakuya she regretted abandoning Rukia and searched for her everyday. Hisana later died of illness on the Spring of the seventh year, but on her death bed, she asked Byakuya to find Rukia and adopt her into the clan, but not to tell her she was related to her, has she considered herself unworthy to be her sister.