File backup is recommended.

Replace a part of GxArchivedFile001 with the included file.
Please use wind-bell's dat_tools for replace.
GxArchivedFile001 is located in Neptunia Virtual Stars \ resource \ masterWin64.

If successful, YOU's Bikini Outfit should be topless.


wind-bell's dat_tool can be downloaded from the following.
http://www.mediafire.com/file/uz9dwe6dq37lwxn/dat_tool_20200828.7z/file