an ethereal backdrop with vibrant pastel rays, halftone effect, and mangastyle stars

beauty kaleidoscopic effect sunburst colorful dreamy backdrop style gentle otherworldly dreamlike pastel soothing refreshing stars entrancing lights artful impressive picturesque vibrant cosmic atmospheric tranquil imaginary halftone whimsical rays transcendent celestial gradient radiant captivating palette ethereal surreal enchanting iridescent fantasy mesmerizing hues manga magical unique soft aigenerated