Thank you!
I plan to upload this game to "newgrounds" someday. :)
Thank you! And I uploaded it changeable with the [I] key!
However, save data may have been lost after updating the game. (Upon examination, it seems to be the specification of the game developed with Unity Engine.)
https://itch.io/t/167558/help-me-unity-html5-playerprefs-vs-updates
Sorry... :_(