Bishie Sparkle

Anime & Manga

 * Sebastian in Black Butler can generate sparkles when he is being particularly charming. This may or may not be a supernatural ability. Ciel Phantomhive can do it too, at will, when he is charming someone with his rarely seen smile.
 * Ichijo in Vampire Knight when he's happy. It's more than a little depressing...
 * In Act 1 of Sailor Moon Crystal, newly-smitten Sailor Moon sees these (with Audible Gleam) and a preponderance of Love Bubbles framing Tuxedo Mask, as he introduces himself while making his exit.