Awakened:
 X + 1 --- toggle tops
 C + 1 --- toggle transparency

If you installed GUICVM 1.4 or higher,
You can check key bindings by GUICVM.

Press F4, or move mouse cursor left top of window & click appered icon.
then click swimsuit icon.

https://www.loverslab.com/files/file/20372-guicvm_base_package_v10zip/


Caution:
1.  If you don't want to use GUICVM, Please disable or delete "sub-gui-text.ini".
2.  This mod only works on Awakened Mode.
3.  Multiple girls with same body type in the screen, topless or transparency function cause glitch.