She's a reptile, Yuui. She won't even realize that I'm gone.

[ Getting the snake home on a plane would be the toughest part but he'd leave more than enough to pay for two seats, easily first class, to Japan and back. What paperwork would be needed, though? He has to wonder. ]

You'll be able to get the proper tank setup from any pet store. The mice, too. Do get them frozen. Keeping live feed is troublesome at best.