Kira is childish, and he hates losing. You guessed it, I'm also childish and hate losing.L ("One") L (エル, Eru) is a world-renowned detective who takes on the challenge of catching the mass murderer known as Kira. In his investigation, L becomes suspicious of Light Yagami and makes it his goal to prove that Light is Kira. L is a very slim, pale, tall young man with messy neck-length black.