When the V-Gauge has one bar. It allow the player to use a V-Reversal.
The V-Reversal (Ｖリバーサル V Ribaasaru?) is a mechanic introduced in Street Fighter V. V-Reversal is one of three divisions of the V-Gauge along the V-Skill and V-Trigger.
Description
Executed by moving forward and pressing all punch or kick buttons while blocking, the V-Reversal uses one bar of the V-Gauge to perform a counter attack, similar to the Alpha Counter of the Street Fighter Alpha series.