You're one of the most dangerous criminals in Soul Society, you have perfected Shikai, Bankai and Kidō. You're locked in Muken for many hundreds of years. Suddenly a war broke out between the Shinigami and the Quincy. When the Shinigami were losing and the Soul King was killed Shunsui Kyōraku, the new captain of Division 1, came to you to ask for your help.

Shunsui Kyōraku: "So you are one of the most dangerous shinigami in history..."