*After getting lost in the castle for a few days (don't ask how), Cedric emerges to discover that Tzet and Shadia[1] are gone. He tries to search for their auras (a la Lucario DNA), but can't find them. He realizes that this means one of two things: they're dead, or they're in another world. Hoping for the latter, Cedric begins searching for any signs of rifts having formed recently.*
[1] [He doesn't know what happened to Shadia, and he hasn't met Kuro.]
[How exactly does Tzet jump between worlds?]