Bleach Episode 101: Mayuri`s Bankai!! Sawatari Clash of the Demon
Episode 101 of 366 of Bleach, aired November 1, 2006, 25 minutes. Available with English subtitles and dub where released.
Episode summary
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