[ To that, he doesn't immediately respond. Instead he pulls out the piece of broken headphone that he found, staring down at it impassively. ]

... Yosuke was here just yesterday. Then Tadashi's app alerts me that he's gone, I find his room empty... and I discover this here.

[ After a moment, he puts the headphone piece away again. Apparently, he intends to keep it. ]

I intend to do what I've always done. Discover the truth, if I can.