Parents (deceased) and brother (deceased), Foster father and teacher Toki
Background Info
It all began before Rekki-maru began to resonate with the curse of Soul Edge. Toki, the chief of the clan and Taki's foster father, suddenly summoned all the ninjas of the clan and addressed them, "Hachibei who once lead this great clan with me has stolen the spiritual ninja-to Mekki-maru and ran away with his daughter Chie. The are now nuke-nin (Ed. Nuke-nin are ninja that leave their clan without permission, usually ninja can not leave the clan until they die because the secrets of their clan and lord. Thus the clan is responsible for the nuke-nin and must execute them as soon as possible. This was one of the tragedies of the ninja, as a nuke-nin if the ninja wanted to live they must kill their friends, kith and kin that now sought their lives.)! I order find them and return Mekki-maru dead or alive!" [Excerpt from the Soul Calibur website]