Great anime

In a construction yard, a man carries a large wooden beam while a woman with white hair holds a tray with two mugs, and a blue cat-like creature watches; the scene cuts to a close-up of two men with pink and black hair glaring intensely at each other, then to a woman in a blue uniform with a top hat and a small white creature on her shoulder, who is smiling and blushing while watching the two men fight with fire and ice magic in the background.