Light Burst (ライトバースト Raito Bāsuto) is an ability in Kingdom Hearts III. It allows the user to counterattack after a successful block by sending a burst of light projectiles in all directions.
The projectiles take on the form of crystalline kanji for "light" (光) turned on its side, akin to the teeth of the Oathkeeper.
Mechanics
In Kingdom Hearts III, Light Burst is an action ability. It is activated by pressing 
after a successful block using Light Guard.
Learning Light Burst
Kingdom Hearts III
- Light Form has Light Burst as a default ability.