Save data from the previous version can no longer be used after the update. To help make up for the inconvenience, starting the game with a previous save will bring up a stage select screen based on how many progression achievements you have unlocked. Also, the first time you start a game like this, the items below will be added to your inventory:
Super Stimulant x1
Super Suppressive x1
Deluxe Candy x2
Super Sugary Drink x1
For this reason, it is recommended you are connected to Steam before playing again.
Other updates:
Added stage select screen when beginning a new game
Revised English translation
Added save/menu explanations