From the Kingdom Hearts Wiki: A world of information not accessible by Gummiship
Dual Shot (クロスショット, Kurosu Shotto?, lit. "Cross Shot") is an ability that appears in Kingdom Hearts III. It allows the user to swirl their Keyblades and fire two revolving bolts of gold and purple light at the enemy which cause an explosion of light upon contact with the enemy.
Learning Dual Shot
Kingdom Hearts III