Aizen Kunitoshi Kunitoshi  

, 愛染国俊

To avoid getting bored, Aizen Kunitoshi doesn't see his first owner but visits Lord Iemitsu instead. On the way, he learns that he was given as a gift of protection for Iemitsu's grandson. This knowledge makes him realize that "Aizen Myoou" represents compassion and love rather than anger and power. He then decides to use his abilities to improve himself as a sword.