Choukai is the fourth Takao-class heavy cruiser in Kantai Collection.
She has red eyes and wears rimless glasses, she has long dark brown or black hair and masts on her head. Her attire is very similar to her sister ship Maya's, she wears a sailor dress consisting of a blue sleeveless shirt with an exposed midriff, a white pleated skirt, black gloves and a loose belt around her waist.
For her Choukai Kai Ni form, she gains a new uniform and rigging which is a mirror image of Maya's own (the hat and rigging are to her right instead of Maya's left). Instead of being optimized for Anti-Air, she is built for night battles with spotlights on her "masts". This remodel is speculative, never having been remodeled historically as she was used extensively during the war, never having the chance to be remodeled. Thus, the remodel needs a blueprint.
Her seiyuu is Touyama Nao.