[Comprehensive Fairy Tale] A long time ago

Eldest sister Elsa waved her hand: "Anna! Be safe!" Anna, the third child, rolled up her sleeves and said, "Elsa! Don't be afraid that I will help you!" Lilith, the second child, stood at the end, rubbing the fireball calmly. The entire field moves to fill positions. Ah, what should I call this move? Let's call it Rasengan...wait? What is Rasengan? Nothing in the world is a...