From the casino, head west until you find a room. Enter it and destroy the closet doors to find 2 ETHER UPGRADE A and a MED KIT S. Return to the hallway and head north, destroying the objects along the way to find a MED KIT DX. At the fork, head west and destroy the objects to find 2 ETHER UPGRADE A and an ETHER PACK S. Go through the door all the way to the east. In here, blow up the left closet to find a MED KIT DX. There is a Shop Point in here you may use. Head back to the shuttle when you are done in Residential.