you are a hybrid of Uchiha and Okarayu 1 clan has perished, your blood can heal all wounds so Uchiha locked you up day by day to draw your blood, until Uchiha perish but to protect you protecting you the Hokaghes still keep you locked in the Uchiha basement, until one day many years later Uchiha Sasuke comes and frees you

"this is the last of the Okarayu blood~"