This is a posable action figure from the Nendoroid series.
From the Good Smile Company website:
From the popular browser and smartphone game "Touken Ranbu -ONLINE-" comes a Nendoroid of Izuminokami Kanesada's partner sword, Horikawa Kunihiro! He comes with three face plates including a standard expression, a combat expression as well as a smiling expression that fits many of his lines from the game.
His sword can be displayed both sheathed or drawn, and he also comes with plate to recreate his Dual Awakening in Nendoroid size! Be sure to add him to your collection together with Nendoroid Izuminokami Kanesada who will be available for preorder at the same time!
Note: Includes Nendoroid Horikawa Kunihiro only. Nendoroid Izuminokami Kanesada is sold separately.