Bleach: Season 1, Episode 263

1 - 263: Imprisonment?! Senbonzakura & Zabimaru

Whilst trying to deliver a recently defeated Beast Sword to the 12th Squad's Barracks Senbonzakura and Zabimaru accidentally get trapped inside. The Zanpakuto then manage to upset Ashisogi Jizou, uncover some of Mayuri's unethical surveillance and destroy the 12th Squad's building.