Renshi is a mercenary for hire, that defected Iwagakure. He is one of the very few surviving individuals that possess the Crystal Release Kekkei Genkai. Renshi defected Iwa to pursue his own interests. At some point after his defection he was contacted by Sayo (DP) for hire. Sayo would use Renshi to commit atrocities and terrorist attacks on her own village and land to cause dismay then clean them up making her look like a hero. In actuality however, Renshi technically isn't a defector and serves Sayo loyally.