When the sparkle of amusement captures Tsuna's eyes, and the twinkling laughter spills out of his mouth, his family can't help but quiet down a little and look. They know that Tsuna never notices how when he laughs, they lower their voices to hear it with better clarity.

That he doesn't know how people tell jokes just to hear that laugh of his.

That when he laughs, he enchants everyone in the general area.

That when his laughter dies down, that they wait for the possibility of one of his few snarky remarks.

That his nod and sarcastic "Of course, Mukuro is definitely the only one of you with issues", amuses them much more than it should.

And that is something they like to keep the way it is.