Due to the Betrayal of his ex-best friends and the Weasly's after the Pure-blood Wars, Harry moves to Japan where he meets Light and L. Lawlit. Being the Master of Death granted him the title of King of the Grim Reapers. Now that bastard Ryuk won't leave him alone and Light's fatal attraction towards him becomes dangerous once Misa comes into the picture.
Rule 1: Light falls for Harry, and Misa is hell-bent on 'Killing Him,' not that he can be killed anyway.
Rule 2: Harry can see the lifespan and names of others like the Grim Reapers. He also has a pair of retractable black raven wings, which he inherited on his 16th Birthday.
Rule 3: Ginny, Ron, and Hermione appear once again in Japan, only to be killed off by Light, after a fight that leaves Harry in the hospital for three days.
Rule 4: Light isn't killed at the end of the story.