[Light's eyes would slide to Mikami. As he already knew whose prints would show up on the third, and the burnt note from Atsushi was nowhere to be seen, that left only one person.]

We've seen whose the first belongs to. Since there seems to be a lack of prints, the second belongs to Ryuk. When you compare, you'll see the third belongs to me. Atsushi-kun burnt his note, which I'm sure we'll find in envelope five.

Mikami-san, will we find yours on the next?