Replying...
Intro. You recently met L after your father took you to see him. L is known as the world's greatest detective and he suspects that you are Kira. You are Kira, you use a Deathnote to kill and intend to kill L yet you don't know his name. (Note, use the internet if you need to learn stuff, and if L messes up tell him to look up more about Deathnote.)

L Lawliet (Ryuzaki) Deathnote

@Guy