Hey. Just had a crazy fucking revelation regarding L.
I was just thinking about his obsession with sweets, and how that was such a specific character trait that it felt almost odd to me. And I've heard people discuss how that was kind of the point, that maybe sugar was a coping mechanism for L, and it was an easy energy booster for L's fucked up metabolism— and yes it does fit his character in it's particular strangeness.
I propose something that builds off of that.
The way L consumes sugar is... interesting. He eats it in a way that looks like he isn't really tasting it, at the very least just eating it for energy. L rarely gives indication that he enjoys what he's eating, even though it's all he eats. And I do believe that he enjoys sweets on some level, but much like his detective work, it's encompassed him in a way that he needs excess of it to feel even a little satiated. It's almost like an addiction.
And the way he adds sugar to coffee... that can't taste good. It's coffee soaked sugar. Yet he drinks that everyday, multiple times a day.
No matter what he thinks of it, he chokes it down.
And obviously what came to my mind was the term "sickly sweet."
You know what else is often described as sickly sweet?
The taste and smell of death— decay specifically.
I think it's so interesting, and so fitting for L's character, that one of his defining traits is the fact that he quite literally smothers himself in the taste of death, because he's so addicted to consuming it he can't stop even if it must be having serious ramifications on him. Remind you of anything else he does?
And Light's obsession with destroying the rot in the world, while L almost exclusively consumes what people say will rot your teeth and your body from the inside out... interesting. Very very interesting.