BANKAI

What the picture shows

An anime character with spiky blond hair and a dark coat stands with head bowed and one arm raised, surrounded by a glowing blue aura and falling white specks against a dim city backdrop. Chatters likely use this to signal an epic power-up, dramatic hype, or going all-out in a big moment.

No measured meaning yet. Used 48 times in 2 channels this month; one is written once chat gives enough evidence.