Run west of where Shion starts and blow up the bushes along the top of the path to find an ANTIDOTE and a MED KIT S. Continue west to find a clearing with a mechanical door and a Save Point / Shop Plate. Blow up the boxes by the door to find a MED KIT L and a MED KIT M, then run along the west boundary to find a hidden path through the bushes you need to blow your way through to get to a chest with a D-TREASURE I, then use the Shop Plate and Save Point before heading east along the path.