|15pxAcute Dark Form|
|Viz print media||Dark Menace Mode|
|Appears in||Anime, Manga, Game, Movie|
|Classification||Kekkei Genkai, Ninjutsu|
|Class||Offensive, Defensive, Supplementary|
By unleashing the full power of his Dark Release kekkei genkai, Kūhaku assumes a form in which the power of his abilities increases tenfold as well as physical attributes such as strength, speed and endurance. This form also grants him immunity against ninjutsu and chakra-based alignments. The chakra produced by this form is so gargantuan that its constantly emitted out of his body in the form of black smoke. The chakra also seems to be highly acidic and poisonous as it was able to burn through most substances that it came into contact with relative ease (with the obvious exception of Kūhaku's sword the Kongōrōken)
While powerful, the form has major draw backs. The amount of chakra needed to sustain it was phenomenal and he could only keep it active for a maximum time of 10 minutes. After that, he experienced extreme fatigue and pain. Repeated overuse of the technique in such short periods of time also had an ill-effect on his body.