This is a posable action figure from the Nendoroid series.
From the Good Smile Company website:
"Love doesn't sink!"
From the popular anime series "Arpeggio of Blue Steel -Ars Nova-" comes a Nendoroid of the Mental Model, Takao!
She comes with three expressions including a confident smiling face, a tsundere face and an entranced face. Optional parts include 'data rings' which can be displayed around her, her favorite book "The Ship and Captain" as well as a dakimakura of the captain! The dakimakura is made from real fabric for a more realistic appearance, and can easily be used with other Nendoroids as well. Enjoy the heavy cruiser in Nendoroid size!