Because you like Summer Roberts in The O.C.

Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.

Ciel Phantomhive is a haughty teenage nobleman who doesn't suffer fools gladly. See them in Black Butler.

The son of Death has an obsession with perfection and symmetry. See them in Soul Eater.

With a unique ability to empathize with killers, Will Graham helps society but his sanity pays the price. See them in Hannibal.