Satan using his Magic Circle, the Dessert Ring, in Sugar Shooter.

Magic Circle refers to the transformation area that each playable character has to turn enemy bullets into consumable sweets. This will increase the character's Sugar Level. The size of the rings will change depending on whether the character is attacking or not. When the character is attacking, the ring will become smaller, making it harder to eat enemy’s bullets. Not all bullets are edible, however. Bosses have two types of attacks, which are normal Attack Patterns and Sugar Rush Attacks. Inedible bullets appear in a boss’s Sugar Rush Attacks only. In Sugar Rush mode, the Magic Circle will change color and continue to increase in size as the character's Sugar Level decreases.