[He'll be moving in closer, making himself comfortable like he's used to being in Rei's apartment often enough and picking up the crystal without any sort of preamble. He brings it up to eye-level, turning it in his hands and nodding slowly as Yusuke continues.]

It wouldn't surprise me. Cerealia's known for having some pretty high-end stuff. Look at the CYBuddies. They look like normal pets until they malfunction. [He purses his lips in thought.] That ghost didn't give you any indication on why it was mad, did it?