They go up to the roof one night, the two of them, just once.
They don't speak as they take the elevator all the way up, as they climb to the very highest point they can. They don't speak as Light leans against the wall, arms wrapped around himself to block out some of the biting cold, as L crouches as far away as the chain allows. They don't speak because there's nothing to say and in the weak, quavering glow of the full moon and the stars and the city far below, Light thinks that L looks like a ghost, and the feeling that follows both is and is not fear.
He tells himself that he is not afraid, that he is never afraid, but even he knows that is a lie and even then, despite the cold and the wind and the silence that stretches so much farther than that moment, he wants to pull L into his arms and hold him close and never let him go.
So he crosses the distance between them and sits down, just close enough to feel the almost-warmth of L's body, the spirit-touch of his hair against Light's cheek.
"Why are we up here?" he asks, and it's almost enough to break through.
"I like it here," L murmurs. "I feel closer to the sky."
It says something about L that he thinks such things and it says something about Light that he does not question. Light can't decide which is more significant, so he decides not to decide.
Sometimes the nicest thing in the world is forgetting to think.
"Do you think Kira is the sort of person who looks at the stars?" Light finds himself saying, and it must be a consequence of not thinking because he hadn't meant to say it and isn't sure why the thought came to him at all.
"It is strange that Light-kun would ask that question," L replies, and Light thinks that's the end of it until he continues, "but I think he is not. He does not seem the sort of dreamer to take comfort in the sky."
It's an odd thing to say and Light is almost certain there is something about it that he doesn't understand.
"What does that say about you, then?"
L turns his head to return Light's gaze and Light is surprised when his breath catches in his throat. L leans closer and his breath curls, warm and sugar-sweet, across Light's cheek, and his eyes are wide and bright and clear, and Light's beginning to feel faint, but that might be because it is very hard suddenly to breathe.
"It says," he murmurs, "that when I sleep I do not dream Kira's dreams."
"What about my dreams?" Light asks, because he wants to know what L really thinks and he thinks that maybe, just for that moment, L might tell him.
L stares at him for a moment, and the silence is back as though Light never spoke at all. Then there is something warm and soft and wet being pressed against Light's mouth and it takes him a moment to realise that it's L and L's kissing him and oh.
L is speaking, the sound almost lost against Light's mouth, in Light's mouth, and Light has to remember to think again before he really hears.
"I hope that Light-kun dreams of stars."