Haguro's kai ni form, released on 23/05/2014, gives her a new modified uniform shared with her fellow sister ships' second remodel. She uses the vanilla rigging of the class (five twin 203 mm twin mounts with handles plus four 610 mm quad torpedo tubes), and wears the vanilla version of the class' purple military uniform, white pantyhose, white gloves, and black pencil skirt; with the only difference being her original hair ornament (representing her real-life mainmast and crane) being retained in this form.
Gameplay-wise, she receives a significant stat boost, mainly her torpedo stat (as she was historically responsible for sinking De Ruyter with a single torpedo in the battle of the Java Sea) and evasion stat (as she had outlasted most other IJN heavy cruisers when she herself was sunk in May 1945).
This tag implicates haguro_(kancolle) (learn more).