The Crescent Moon that mesmerized the Green Snake

For sixteen years, Draco has live a life of and wealth and luxury, as befitting his status as a pureblood. But all of that is brought to an end, when he's made to become a death eater. He soon finds that his darkness is cleared away by a new pureblood witch who comes to Hogwarts ,after being caught in the throes of a family tragedy. What would his Slytherin instincts have him do?