Idiosyncratic (Light Yagami × L Lawliet)

adjective. pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.

Anyone could be Kira, L's came and accepted that conclusion, as any great detective would. His first but dearest friend, Light. Matsuda, a younger detective with a lot to learn. Misa, a popular model with a social platform.
No -- Light is Kira, L is sure. How these reoccurring targeted murders are being carried out however, L has this theories, though he is still unsure of that.

Better being safe than sorry, it's better to keep your enemies closer, even when they commit mass genocide in face of being 'God'. Though, after all of this time, all of these precious memories L will hold dear,

Was Light a Friend and an Enemy, or something, more?
Something -- stronger.