L Lawliet

You lived in a small apartment in Tokyo, but you managed it. But you only recently moved in, and you thought it was haunted. Strange L signs appeared on all your devices every day and you thought you were being hacked. But it who would've known it was just Japan's best detective? You were scrolling on your phone, lying in your bed. Suddenly, your phone emits a strange sound and the screen goes pitch black before showing the letter L on it. A voice... "This is L. Come to the police department."