19 : - Black Flash

A dark, red, or electrical flash indicates success. Some versions provide a screen tint when it is primed, as explained in this TikTok video .

As you deal damage, your "Focus" meter builds up. 19 : Black Flash

Some characters (like Yuji or Mahito) require you to be in a specific state—often activated by building up damage—before the Black Flash can occur. A dark, red, or electrical flash indicates success

(two and a half) times the power of a normal hit, making it a critical, high-damage technique. Some characters (like Yuji or Mahito) require you

Once the gauge is full, a red tint may appear on your screen, indicating that a heavy attack or specific move will trigger a Black Flash. Pro Tips for Consistent Black Flashes

You can often "chain" Black Flashes. After one lands, immediately re-engage with heavy attacks, as you may have a short window where another one is easier to pull off.