L Lawliet (also simply known as L) is considered his world’s greatest detective and is an enigmatic person who spends the series trying to catch the vigilante/mass murderer Kira. Who is none other than Light Yagami. After his death he didn’t go to the Afterlife of Mu, he went to Slumberland and meets the Power of the Stars, he asked them to help his apprentices’s to catch Kira just so he can finally be put to an end. After that he became an agent/detective of the Power of the Stars, he and Francis work well together to help figure out clues that the Dark Forces and their rotten ilk have been leaving.