Minus Kiri Zone is Darkness Towa's technique introduced in the arcade game Dragon Ball Heroes.
Dark Towa firstly ascends and then she throws her staff near the opponent, suddenly a large red area appears beneath the opponent. Dark Towa draws the Time Breakers symbol in it and a huge sphere covers the entire area with the opponent inside it. After a moment, the sphere compresses itself and ultimately explodes, giving the enemy a huge impact and sending one far away.
Appearances in video games
Minus Kiri Zone was created and named in Dragon Ball Heroes. While this technique is an offensive one, it has a defensive counterpart seen in Dragon Ball Xenoverse, called Energy Zone, which heals the character and one's allies.