Ch. 381Your Zanpakutō Only Has Half a Name.
Iori demonstrated how the Knot could reconnect a Shinigami with a Zanpakuto turned against them, using Kurotsuchi Mayuri and Sode no Shirayuki as a test. After Yamamoto learned of the method, an experiment with Shubaku confirmed that it could improve a Shinigami’s control of Bankai, leaving Koga’s ability newly valuable to Soul Society.
- Iori explained that Zanpakuto hid a desire to protect their wielders and introduced the custom-made Knot, which Kurotsuchi Mayuri tested on himself.
- Koga used Muramasa to draw Sode no Shirayuki from Mayuri’s sheath, and the Zanpakuto spirit attacked Mayuri with poisoned blades.
- Iori explained that the Knot connected Mayuri and his Zanpakuto through a red thread, while a second Kido used memories stored in the sheath to break Muramasa’s bewitchment.
- Iori told Koga that the method could help him become a pillar of the Thirteen Court Guard Squads, then privately reported Koga and Muramasa’s potential to Yamamoto.
- Yamamoto summoned Iori, Koga, and Mayuri to test a Knot on Shubaku, whose Bankai became easier to wield and control after he fought his Zanpakuto.