Kantai Collection's personification of the USS Johnston (hull number DD-557), 75th of the US Navy's 175 Fletcher-class destroyers.
She wears a stylized serafuku which consists of an off-shoulder blue shirt with a black sailor collar that exposes her cleavage and short black pleated skirt, along with black thighhighs held by garter straps with what seem to be metallic thigh and shin guards and red rudder shoes. Johnston's damaged CG has her stripped of some of her clothing, revealing a bit of her black underwear.
On her left hand she wears a single black glove, an oblique reference to the injuries to the left hand sustained by her captain, Lieutenant Commander Ernest E. Evans, including losing two fingers. Draped on her left upper arm is the Medal of Honor, presumably similar to the one posthumously awarded to Lieutenant Commander Evans for his actions in the Battle off Samar.
Her machinery consists of two smokestacks and two 5-inch cannon turrets with one set on each side of her rigging, with a third handheld turret on her right hand. Her hull number is emblazoned on each side of her lower rigs.
The historical destroyer was part of the Taffy 3 party (which included Samuel B. Roberts and Gambier Bay) and was sunk during the Battle off Samar by successive firings from Kurita Takeo's forces, but not before scoring hits of her own, including those to Kumano. For her actions, she was given a Presidential Unit Citation and six battle stars, which shipgirl Johnston displays as one bronze star and one silver star (equivalent to five bronzes) on her collar.
She's voiced by Shiraki Nao and was designed by Zeco. Her namesake is Navy Lieutenant John V. Johnston, who fought for the Union from 1862 to 1864 during the American Civil War. She is the game's first bona fide American destroyer, despite the fact that destroyer escort Samuel B. Roberts was already classified as a destroyer in the game.