Update 0.4.0.0

• Save function was added.
  
• Added a simple tutorial.
  
• Change of game design
  

attention
We've made quite a few changes, so bugs are to be expected.
Also, we've added a save feature, but that data may change in the future.
Depending on the content of the update, you may have to lose your data or restart the game anew.
If you don't want to take that risk, you may want to skip this update.

Also, no enemies or skills have been added, so I don't think there's any increase in fun.
However, the story has been added so you can get a more complete picture of the game.

We'll have more information about other information and future updates in due course.