My Piece Of Heaven (Larry Stylinson AU Angel!Harry Demon!Louis)

Since long years there is a fight - a war, actually - between Angels and Demons. The Demons want to weaken the Angel's army. Louis, son of Lucifer and Prince of Hell, knows that the one and only weak spot is Harry, the Archangel's son, even though the Angels don't know- He begins to try to seduce and tempt the young Angel. But what happens if the feelings that Louis is pretending to have come true? And what happens if Louis' family finds out?

Warnings: violence