(アクティブ・イナーシャル・キャンセラー Akutibu Ināsharu Kyanserā). A system designed to negate the inertia of a moving mass. In simple terms, it stops the movement of any object the user wishes. It is the special weapon of the Schwarzer Regen IS. Its weakness is that its range of effect depends on the total area its user can concentrate on; in other words, it is weak against multiple foes.