This is a posable action figure from the Nendoroid series.
From the Good Smile Company website:
"Our citadel is the Hanamaru today too"
From the anime series 'Touken Ranbu -Hanamaru-' comes a Nendoroid of the sword said to be used by the Shinsengumi's Okita Soji - Kashu Kiyomitsu wearing his uchiban outfit! His cute pose in the middle of getting dressed has been adorably preserved in Nendoroid size for fans to enjoy! Be sure to display him with Nendoroid Co-de: Yamatonokami Yasusada -Hanamaru- Uchiban Co-de which will be available at the same time!