Mayuri's Bankai!! Sawatari Clash of the Demon
Sawatari enters the Seireitei and sees Mayuri Kurotsuchi, the captain of Squad 12. Mayuri proposes that he become a guinea pig for an experiment, but Sawatari refuses and attacks Mayuri using the Doll Baura. Mayuri releases his zanpakuto to counterattack, but he is severely injured by Baura, who has become more powerful since coming to the Soul Society. In the middle of the battle, Mayuri sees the key to Baura's attack. Source: crunchyroll
Aired 01/11/2006EP 101 - Mayuri's Bankai!! Sawatari Clash of the Demon
Bleach
Ichigo Kurosaki is a rather normal high school student apart from the fact he has the ability to see ghosts. This ability never impacted his life in a major way until the day he encounters the Shinigami Kuchiki Rukia, who saves him and his family's lives from a Hollow, a corrupt spirit that devours human souls.
Wounded during the fight against the Hollow, Rukia chooses the only option available to defeat the monster and passes her Shinigami powers to Ichigo. Now forced to act as a substitute until Rukia recovers, Ichigo hunts down the Hollows that plague his town.