Boys and girls

A blue-haired character with glasses fires a large, glowing blue energy sphere from their hands in a dark, industrial setting. The scene cuts to a close-up of a determined character with purple hair, then to a serene blonde character with closed eyes, followed by a dark-haired character in a green cloak looking forward with another figure in the background, then a close-up of a blonde character's face in shadow, and finally a red-haired character in a fighting stance in a dimly lit, stone-walled area.