Samurai Sword SET, contains 4 types
If you want the sword to bend like a whip like in the anime, load the cz mk sword 00 asset and then use the IK for Custom Unity Assets plugin to adjust its bones.
For detailed instructions, please see How to use this plugin
Mitsuri Kanroji SET is here
https://www.patreon.com/posts/mitsuri-kanroji-112546239